Submission #1134180

#TimeUsernameProblemLanguageResultExecution timeMemory
1134180AgageldiChessboard (IZhO18_chessboard)C++17
Compilation error
0 ms0 KiB
#include <bits/stdc++.h> using namespace std; #define ll long long #define N 400005 #define ff first #define ss second #define pb push_back #define sz(s) (int)s.size() #define rep(c, a, b) for(c = a; c <= b; c++) ll n, t, y, answer, k, jogap = INT_MAX, p, x1[N], x2[N], y1[N], y2[N]; vector <int> v; int power(int a,int b) { return a*b; } int main () { ios::sync_with_stdio(0);cin.tie(0); cin >> n >> k; for(int i = 1; i <= k; i++) { cin >> x1[i] >> y1[i] >> x2[i] >> y2[i]; } for(int i = 1; i < n; i++) { if(n % i == 0) v.pb(i); } for(auto i : v) { int b = 0; for(int j = 1;j <= k; j++) { t = ((x1[j] - 1) / i) % 2; p = ((y1[j] - 1) / i) % 2; bool tap = 0; if(t && !p || !t && p) tap = 1; if(!tap) answer++; else b++; } t = power((n/i/2),(n/i + 1)/2) * 2 * i * i; jogap = min(jogap,answer + t - b); } cout << jogap << '\n'; }

Compilation message (stderr)

chessboard.cpp:12:62: error: 'long long int y1 [400005]' redeclared as different kind of entity
   12 | ll n, t, y, answer, k, jogap = INT_MAX, p, x1[N], x2[N], y1[N], y2[N];
      |                                                              ^
In file included from /usr/include/features.h:486,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/os_defines.h:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/c++config.h:586,
                 from /usr/include/c++/11/cassert:43,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:33,
                 from chessboard.cpp:1:
/usr/include/x86_64-linux-gnu/bits/mathcalls.h:224:1: note: previous declaration 'double y1(double)'
  224 | __MATHCALL (y1,, (_Mdouble_));
      | ^~~~~~~~~~
chessboard.cpp: In function 'int main()':
chessboard.cpp:22:37: warning: pointer to a function used in arithmetic [-Wpointer-arith]
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                     ^
chessboard.cpp:22:30: error: no match for 'operator>>' (operand types are 'std::basic_istream<char>::__istream_type' {aka 'std::basic_istream<char>'} and 'double(double) noexcept')
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                 ~~~~~~~~~~~~ ^~ ~~~~~
      |                     |               |
      |                     |               double(double) noexcept
      |                     std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}
In file included from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from chessboard.cpp:1:
/usr/include/c++/11/istream:120:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__istream_type& (*)(std::basic_istream<_CharT, _Traits>::__istream_type&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]' (near match)
  120 |       operator>>(__istream_type& (*__pf)(__istream_type&))
      |       ^~~~~~~~
/usr/include/c++/11/istream:120:7: note:   conversion of argument 1 would be ill-formed:
chessboard.cpp:22:37: error: invalid conversion from 'double (*)(double) noexcept' to 'std::basic_istream<char>::__istream_type& (*)(std::basic_istream<char>::__istream_type&)' {aka 'std::basic_istream<char>& (*)(std::basic_istream<char>&)'} [-fpermissive]
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                 ~~~~^
      |                                     |
      |                                     double (*)(double) noexcept
In file included from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from chessboard.cpp:1:
/usr/include/c++/11/istream:124:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__ios_type& (*)(std::basic_istream<_CharT, _Traits>::__ios_type&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>; std::basic_istream<_CharT, _Traits>::__ios_type = std::basic_ios<char>]' (near match)
  124 |       operator>>(__ios_type& (*__pf)(__ios_type&))
      |       ^~~~~~~~
/usr/include/c++/11/istream:124:7: note:   conversion of argument 1 would be ill-formed:
chessboard.cpp:22:37: error: invalid conversion from 'double (*)(double) noexcept' to 'std::basic_istream<char>::__ios_type& (*)(std::basic_istream<char>::__ios_type&)' {aka 'std::basic_ios<char>& (*)(std::basic_ios<char>&)'} [-fpermissive]
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                 ~~~~^
      |                                     |
      |                                     double (*)(double) noexcept
In file included from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from chessboard.cpp:1:
/usr/include/c++/11/istream:131:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::ios_base& (*)(std::ios_base&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]' (near match)
  131 |       operator>>(ios_base& (*__pf)(ios_base&))
      |       ^~~~~~~~
/usr/include/c++/11/istream:131:7: note:   conversion of argument 1 would be ill-formed:
chessboard.cpp:22:37: error: invalid conversion from 'double (*)(double) noexcept' to 'std::ios_base& (*)(std::ios_base&)' [-fpermissive]
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                 ~~~~^
      |                                     |
      |                                     double (*)(double) noexcept
In file included from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from chessboard.cpp:1:
/usr/include/c++/11/istream:168:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(bool&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]' (near match)
  168 |       operator>>(bool& __n)
      |       ^~~~~~~~
/usr/include/c++/11/istream:168:7: note:   conversion of argument 1 would be ill-formed:
chessboard.cpp:22:37: error: cannot bind non-const lvalue reference of type 'bool&' to a value of type 'double (*)(double) noexcept'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                 ~~~~^
In file included from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from chessboard.cpp:1:
/usr/include/c++/11/istream:172:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(short int&) [with _CharT = char; _Traits = std::char_traits<char>]' (near match)
  172 |       operator>>(short& __n);
      |       ^~~~~~~~
/usr/include/c++/11/istream:172:7: note:   conversion of argument 1 would be ill-formed:
chessboard.cpp:22:37: error: invalid conversion from 'double (*)(double) noexcept' to 'short int' [-fpermissive]
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                 ~~~~^
      |                                     |
      |                                     double (*)(double) noexcept
chessboard.cpp:22:37: error: cannot bind rvalue '(short int)(y1 + ((sizetype)i))' to 'short int&'
In file included from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from chessboard.cpp:1:
/usr/include/c++/11/istream:175:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(short unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]' (near match)
  175 |       operator>>(unsigned short& __n)
      |       ^~~~~~~~
/usr/include/c++/11/istream:175:7: note:   conversion of argument 1 would be ill-formed:
chessboard.cpp:22:37: error: invalid conversion from 'double (*)(double) noexcept' to 'short unsigned int' [-fpermissive]
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                 ~~~~^
      |                                     |
      |                                     double (*)(double) noexcept
chessboard.cpp:22:37: error: cannot bind rvalue '(short unsigned int)(y1 + ((sizetype)i))' to 'short unsigned int&'
In file included from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from chessboard.cpp:1:
/usr/include/c++/11/istream:179:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(int&) [with _CharT = char; _Traits = std::char_traits<char>]' (near match)
  179 |       operator>>(int& __n);
      |       ^~~~~~~~
/usr/include/c++/11/istream:179:7: note:   conversion of argument 1 would be ill-formed:
chessboard.cpp:22:37: error: invalid conversion from 'double (*)(double) noexcept' to 'int' [-fpermissive]
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                 ~~~~^
      |                                     |
      |                                     double (*)(double) noexcept
chessboard.cpp:22:37: error: cannot bind rvalue '(int)(y1 + ((sizetype)i))' to 'int&'
In file included from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from chessboard.cpp:1:
/usr/include/c++/11/istream:182:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]' (near match)
  182 |       operator>>(unsigned int& __n)
      |       ^~~~~~~~
/usr/include/c++/11/istream:182:7: note:   conversion of argument 1 would be ill-formed:
chessboard.cpp:22:37: error: invalid conversion from 'double (*)(double) noexcept' to 'unsigned int' [-fpermissive]
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                 ~~~~^
      |                                     |
      |                                     double (*)(double) noexcept
chessboard.cpp:22:37: error: cannot bind rvalue '(unsigned int)(y1 + ((sizetype)i))' to 'unsigned int&'
In file included from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from chessboard.cpp:1:
/usr/include/c++/11/istream:186:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]' (near match)
  186 |       operator>>(long& __n)
      |       ^~~~~~~~
/usr/include/c++/11/istream:186:7: note:   conversion of argument 1 would be ill-formed:
chessboard.cpp:22:37: error: invalid conversion from 'double (*)(double) noexcept' to 'long int' [-fpermissive]
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                 ~~~~^
      |                                     |
      |                                     double (*)(double) noexcept
chessboard.cpp:22:37: error: cannot bind rvalue '(long int)(y1 + ((sizetype)i))' to 'long int&'
In file included from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from chessboard.cpp:1:
/usr/include/c++/11/istream:190:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]' (near match)
  190 |       operator>>(unsigned long& __n)
      |       ^~~~~~~~
/usr/include/c++/11/istream:190:7: note:   conversion of argument 1 would be ill-formed:
chessboard.cpp:22:37: error: invalid conversion from 'double (*)(double) noexcept' to 'long unsigned int' [-fpermissive]
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                 ~~~~^
      |                                     |
      |                                     double (*)(double) noexcept
chessboard.cpp:22:37: error: cannot bind rvalue '(long unsigned int)(y1 + ((sizetype)i))' to 'long unsigned int&'
In file included from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from chessboard.cpp:1:
/usr/include/c++/11/istream:195:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]' (near match)
  195 |       operator>>(long long& __n)
      |       ^~~~~~~~
/usr/include/c++/11/istream:195:7: note:   conversion of argument 1 would be ill-formed:
chessboard.cpp:22:37: error: invalid conversion from 'double (*)(double) noexcept' to 'long long int' [-fpermissive]
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                 ~~~~^
      |                                     |
      |                                     double (*)(double) noexcept
chessboard.cpp:22:37: error: cannot bind rvalue '(long long int)(y1 + ((sizetype)i))' to 'long long int&'
In file included from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from chessboard.cpp:1:
/usr/include/c++/11/istream:199:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]' (near match)
  199 |       operator>>(unsigned long long& __n)
      |       ^~~~~~~~
/usr/include/c++/11/istream:199:7: note:   conversion of argument 1 would be ill-formed:
chessboard.cpp:22:37: error: invalid conversion from 'double (*)(double) noexcept' to 'long long unsigned int' [-fpermissive]
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                 ~~~~^
      |                                     |
      |                                     double (*)(double) noexcept
chessboard.cpp:22:37: error: cannot bind rvalue '(long long unsigned int)(y1 + ((sizetype)i))' to 'long long unsigned int&'
In file included from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from chessboard.cpp:1:
/usr/include/c++/11/istream:235:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(void*&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]' (near match)
  235 |       operator>>(void*& __p)
      |       ^~~~~~~~
/usr/include/c++/11/istream:235:7: note:   conversion of argument 1 would be ill-formed:
chessboard.cpp:22:37: error: invalid conversion from 'double (*)(double) noexcept' to 'void*' [-fpermissive]
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                 ~~~~^
      |                                     |
      |                                     double (*)(double) noexcept
chessboard.cpp:22:37: error: cannot bind rvalue '(void*)(y1 + ((sizetype)i))' to 'void*&'
In file included from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from chessboard.cpp:1:
/usr/include/c++/11/istream:214:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(float&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
  214 |       operator>>(float& __f)
      |       ^~~~~~~~
/usr/include/c++/11/istream:214:25: note:   no known conversion for argument 1 from 'double(double) noexcept' to 'float&'
  214 |       operator>>(float& __f)
      |                  ~~~~~~~^~~
/usr/include/c++/11/istream:218:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(double&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
  218 |       operator>>(double& __f)
      |       ^~~~~~~~
/usr/include/c++/11/istream:218:26: note:   no known conversion for argument 1 from 'double(double) noexcept' to 'double&'
  218 |       operator>>(double& __f)
      |                  ~~~~~~~~^~~
/usr/include/c++/11/istream:222:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long double&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
  222 |       operator>>(long double& __f)
      |       ^~~~~~~~
/usr/include/c++/11/istream:222:31: note:   no known conversion for argument 1 from 'double(double) noexcept' to 'long double&'
  222 |       operator>>(long double& __f)
      |                  ~~~~~~~~~~~~~^~~
/usr/include/c++/11/istream:259:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__streambuf_type*) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__streambuf_type = std::basic_streambuf<char>]'
  259 |       operator>>(__streambuf_type* __sb);
      |       ^~~~~~~~
/usr/include/c++/11/istream:259:36: note:   no known conversion for argument 1 from 'double(double) noexcept' to 'std::basic_istream<char>::__streambuf_type*' {aka 'std::basic_streambuf<char>*'}
  259 |       operator>>(__streambuf_type* __sb);
      |                  ~~~~~~~~~~~~~~~~~~^~~~
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:45,
                 from chessboard.cpp:1:
/usr/include/c++/11/cstddef:132:5: note: candidate: 'template<class _IntegerType> constexpr std::__byte_op_t<_IntegerType> std::operator>>(std::byte, _IntegerType)'
  132 |     operator>>(byte __b, _IntegerType __shift) noexcept
      |     ^~~~~~~~
/usr/include/c++/11/cstddef:132:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:21: note:   cannot convert 'std::cin.std::basic_istream<char>::operator>>(x1[i])' (type 'std::basic_istream<char>::__istream_type' {aka 'std::basic_istream<char>'}) to type 'std::byte'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                 ~~~~^~~~~~~~
In file included from /usr/include/c++/11/string:56,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from chessboard.cpp:1:
/usr/include/c++/11/bits/basic_string.tcc:1485:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 1485 |     operator>>(basic_istream<_CharT, _Traits>& __in,
      |     ^~~~~~~~
/usr/include/c++/11/bits/basic_string.tcc:1485:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   mismatched types 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'double(double) noexcept'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                     ^
In file included from /usr/include/c++/11/istream:1016,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from chessboard.cpp:1:
/usr/include/c++/11/bits/istream.tcc:958:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT&)'
  958 |     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
      |     ^~~~~~~~
/usr/include/c++/11/bits/istream.tcc:958:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   deduced conflicting types for parameter '_CharT' ('char' and 'double(double) noexcept')
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                     ^
In file included from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from chessboard.cpp:1:
/usr/include/c++/11/istream:756:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char&)'
  756 |     operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c)
      |     ^~~~~~~~
/usr/include/c++/11/istream:756:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   cannot convert '*(y1 + ((sizetype)i))' (type 'double(double) noexcept') to type 'unsigned char&'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                 ~~~~^
In file included from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from chessboard.cpp:1:
/usr/include/c++/11/istream:761:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char&)'
  761 |     operator>>(basic_istream<char, _Traits>& __in, signed char& __c)
      |     ^~~~~~~~
/usr/include/c++/11/istream:761:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   cannot convert '*(y1 + ((sizetype)i))' (type 'double(double) noexcept') to type 'signed char&'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                 ~~~~^
In file included from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from chessboard.cpp:1:
/usr/include/c++/11/istream:803:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT*)'
  803 |     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s)
      |     ^~~~~~~~
/usr/include/c++/11/istream:803:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   deduced conflicting types for parameter '_CharT' ('char' and 'double(double) noexcept')
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                     ^
In file included from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from chessboard.cpp:1:
/usr/include/c++/11/istream:846:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char*)'
  846 |     operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s)
      |     ^~~~~~~~
/usr/include/c++/11/istream:846:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   cannot convert '*(y1 + ((sizetype)i))' (type 'double(double) noexcept') to type 'unsigned char*'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                 ~~~~^
In file included from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from chessboard.cpp:1:
/usr/include/c++/11/istream:852:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char*)'
  852 |     operator>>(basic_istream<char, _Traits>& __in, signed char* __s)
      |     ^~~~~~~~
/usr/include/c++/11/istream:852:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   cannot convert '*(y1 + ((sizetype)i))' (type 'double(double) noexcept') to type 'signed char*'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                 ~~~~^
In file included from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from chessboard.cpp:1:
/usr/include/c++/11/istream:1006:5: note: candidate: 'template<class _Istream, class _Tp> _Istream&& std::operator>>(_Istream&&, _Tp&&)'
 1006 |     operator>>(_Istream&& __is, _Tp&& __x)
      |     ^~~~~~~~
/usr/include/c++/11/istream:1006:5: note:   template argument deduction/substitution failed:
/usr/include/c++/11/istream: In substitution of 'template<class _Istream, class _Tp> _Istream&& std::operator>>(_Istream&&, _Tp&&) [with _Istream = std::basic_istream<char>&; _Tp = double (&)(double) noexcept]':
chessboard.cpp:22:23:   required from here
/usr/include/c++/11/istream:1006:5: error: no type named 'type' in 'struct std::enable_if<false, void>'
In file included from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from chessboard.cpp:1:
/usr/include/c++/11/complex:501:5: note: candidate: 'template<class _Tp, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::complex<_Tp>&)'
  501 |     operator>>(basic_istream<_CharT, _Traits>& __is, complex<_Tp>& __x)
      |     ^~~~~~~~
/usr/include/c++/11/complex:501:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   mismatched types 'std::complex<_Tp>' and 'double(double) noexcept'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                     ^
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:66,
                 from chessboard.cpp:1:
/usr/include/c++/11/bitset:1472:5: note: candidate: 'template<class _CharT, class _Traits, long unsigned int _Nb> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::bitset<_Nb>&)'
 1472 |     operator>>(std::basic_istream<_CharT, _Traits>& __is, bitset<_Nb>& __x)
      |     ^~~~~~~~
/usr/include/c++/11/bitset:1472:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   mismatched types 'std::bitset<_Nb>' and 'double(double) noexcept'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                     ^
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:72,
                 from chessboard.cpp:1:
/usr/include/c++/11/iomanip:71:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Resetiosflags)'
   71 |     operator>>(basic_istream<_CharT, _Traits>& __is, _Resetiosflags __f)
      |     ^~~~~~~~
/usr/include/c++/11/iomanip:71:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   cannot convert '*(y1 + ((sizetype)i))' (type 'double(double) noexcept') to type 'std::_Resetiosflags'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                 ~~~~^
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:72,
                 from chessboard.cpp:1:
/usr/include/c++/11/iomanip:101:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Setiosflags)'
  101 |     operator>>(basic_istream<_CharT, _Traits>& __is, _Setiosflags __f)
      |     ^~~~~~~~
/usr/include/c++/11/iomanip:101:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   cannot convert '*(y1 + ((sizetype)i))' (type 'double(double) noexcept') to type 'std::_Setiosflags'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                 ~~~~^
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:72,
                 from chessboard.cpp:1:
/usr/include/c++/11/iomanip:132:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Setbase)'
  132 |     operator>>(basic_istream<_CharT, _Traits>& __is, _Setbase __f)
      |     ^~~~~~~~
/usr/include/c++/11/iomanip:132:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   cannot convert '*(y1 + ((sizetype)i))' (type 'double(double) noexcept') to type 'std::_Setbase'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                 ~~~~^
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:72,
                 from chessboard.cpp:1:
/usr/include/c++/11/iomanip:170:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Setfill<_CharT>)'
  170 |     operator>>(basic_istream<_CharT, _Traits>& __is, _Setfill<_CharT> __f)
      |     ^~~~~~~~
/usr/include/c++/11/iomanip:170:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   mismatched types 'std::_Setfill<_CharT>' and 'double (*)(double) noexcept'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                     ^
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:72,
                 from chessboard.cpp:1:
/usr/include/c++/11/iomanip:200:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Setprecision)'
  200 |     operator>>(basic_istream<_CharT, _Traits>& __is, _Setprecision __f)
      |     ^~~~~~~~
/usr/include/c++/11/iomanip:200:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   cannot convert '*(y1 + ((sizetype)i))' (type 'double(double) noexcept') to type 'std::_Setprecision'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                 ~~~~^
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:72,
                 from chessboard.cpp:1:
/usr/include/c++/11/iomanip:230:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Setw)'
  230 |     operator>>(basic_istream<_CharT, _Traits>& __is, _Setw __f)
      |     ^~~~~~~~
/usr/include/c++/11/iomanip:230:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   cannot convert '*(y1 + ((sizetype)i))' (type 'double(double) noexcept') to type 'std::_Setw'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                 ~~~~^
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:72,
                 from chessboard.cpp:1:
/usr/include/c++/11/iomanip:264:5: note: candidate: 'template<class _CharT, class _Traits, class _MoneyT> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Get_money<_MoneyT>)'
  264 |     operator>>(basic_istream<_CharT, _Traits>& __is, _Get_money<_MoneyT> __f)
      |     ^~~~~~~~
/usr/include/c++/11/iomanip:264:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   mismatched types 'std::_Get_money<_MoneyT>' and 'double (*)(double) noexcept'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                     ^
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:72,
                 from chessboard.cpp:1:
/usr/include/c++/11/iomanip:418:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Get_time<_CharT>)'
  418 |     operator>>(basic_istream<_CharT, _Traits>& __is, _Get_time<_CharT> __f)
      |     ^~~~~~~~
/usr/include/c++/11/iomanip:418:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   mismatched types 'std::_Get_time<_CharT>' and 'double (*)(double) noexcept'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                     ^
In file included from /usr/include/c++/11/valarray:603,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:95,
                 from chessboard.cpp:1:
/usr/include/c++/11/bits/valarray_after.h:414:5: note: candidate: 'template<class _Dom1, class _Dom2> std::_Expr<std::__detail::_BinClos<std::__shift_right, std::_Expr, std::_Expr, _Dom1, _Dom2>, typename std::__fun<std::__shift_right, typename _Dom1::value_type>::result_type> std::operator>>(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const std::_Expr<_Dom2, typename _Dom2::value_type>&)'
  414 |     _DEFINE_EXPR_BINARY_OPERATOR(>>, struct std::__shift_right)
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/11/bits/valarray_after.h:414:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   'std::basic_istream<char>::__istream_type' {aka 'std::basic_istream<char>'} is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                     ^
In file included from /usr/include/c++/11/valarray:603,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:95,
                 from chessboard.cpp:1:
/usr/include/c++/11/bits/valarray_after.h:414:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__shift_right, std::_Expr, std::_Constant, _Dom, typename _Dom::value_type>, typename std::__fun<std::__shift_right, typename _Dom1::value_type>::result_type> std::operator>>(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const typename _Dom::value_type&)'
  414 |     _DEFINE_EXPR_BINARY_OPERATOR(>>, struct std::__shift_right)
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/11/bits/valarray_after.h:414:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   'std::basic_istream<char>::__istream_type' {aka 'std::basic_istream<char>'} is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                     ^
In file included from /usr/include/c++/11/valarray:603,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:95,
                 from chessboard.cpp:1:
/usr/include/c++/11/bits/valarray_after.h:414:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__shift_right, std::_Constant, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__shift_right, typename _Dom1::value_type>::result_type> std::operator>>(const typename _Dom::value_type&, const std::_Expr<_Dom1, typename _Dom1::value_type>&)'
  414 |     _DEFINE_EXPR_BINARY_OPERATOR(>>, struct std::__shift_right)
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/11/bits/valarray_after.h:414:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'double(double) noexcept'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                     ^
In file included from /usr/include/c++/11/valarray:603,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:95,
                 from chessboard.cpp:1:
/usr/include/c++/11/bits/valarray_after.h:414:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__shift_right, std::_Expr, std::_ValArray, _Dom, typename _Dom::value_type>, typename std::__fun<std::__shift_right, typename _Dom1::value_type>::result_type> std::operator>>(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const std::valarray<typename _Dom::value_type>&)'
  414 |     _DEFINE_EXPR_BINARY_OPERATOR(>>, struct std::__shift_right)
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/11/bits/valarray_after.h:414:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   'std::basic_istream<char>::__istream_type' {aka 'std::basic_istream<char>'} is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                     ^
In file included from /usr/include/c++/11/valarray:603,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:95,
                 from chessboard.cpp:1:
/usr/include/c++/11/bits/valarray_after.h:414:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__shift_right, std::_ValArray, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__shift_right, typename _Dom1::value_type>::result_type> std::operator>>(const std::valarray<typename _Dom::value_type>&, const std::_Expr<_Dom1, typename _Dom1::value_type>&)'
  414 |     _DEFINE_EXPR_BINARY_OPERATOR(>>, struct std::__shift_right)
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/11/bits/valarray_after.h:414:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'double(double) noexcept'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                     ^
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:95,
                 from chessboard.cpp:1:
/usr/include/c++/11/valarray:1195:1: note: candidate: 'template<class _Tp> std::_Expr<std::__detail::_BinClos<std::__shift_right, std::_ValArray, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__shift_right, _Tp>::result_type> std::operator>>(const std::valarray<_Tp>&, const std::valarray<_Tp>&)'
 1195 | _DEFINE_BINARY_OPERATOR(>>, __shift_right)
      | ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/11/valarray:1195:1: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   'std::basic_istream<char>::__istream_type' {aka 'std::basic_istream<char>'} is not derived from 'const std::valarray<_Tp>'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                     ^
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:95,
                 from chessboard.cpp:1:
/usr/include/c++/11/valarray:1195:1: note: candidate: 'template<class _Tp> std::_Expr<std::__detail::_BinClos<std::__shift_right, std::_ValArray, std::_Constant, _Tp, _Tp>, typename std::__fun<std::__shift_right, _Tp>::result_type> std::operator>>(const std::valarray<_Tp>&, const typename std::valarray<_Tp>::value_type&)'
 1195 | _DEFINE_BINARY_OPERATOR(>>, __shift_right)
      | ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/11/valarray:1195:1: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   'std::basic_istream<char>::__istream_type' {aka 'std::basic_istream<char>'} is not derived from 'const std::valarray<_Tp>'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                     ^
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:95,
                 from chessboard.cpp:1:
/usr/include/c++/11/valarray:1195:1: note: candidate: 'template<class _Tp> std::_Expr<std::__detail::_BinClos<std::__shift_right, std::_Constant, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__shift_right, _Tp>::result_type> std::operator>>(const typename std::valarray<_Tp>::value_type&, const std::valarray<_Tp>&)'
 1195 | _DEFINE_BINARY_OPERATOR(>>, __shift_right)
      | ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/11/valarray:1195:1: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   mismatched types 'const std::valarray<_Tp>' and 'double(double) noexcept'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                     ^
In file included from /usr/include/c++/11/random:51,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:108,
                 from chessboard.cpp:1:
/usr/include/c++/11/bits/random.tcc:921:5: note: candidate: 'template<class _IntType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::uniform_int_distribution<_IntType>&)'
  921 |     operator>>(std::basic_istream<_CharT, _Traits>& __is,
      |     ^~~~~~~~
/usr/include/c++/11/bits/random.tcc:921:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   mismatched types 'std::uniform_int_distribution<_IntType>' and 'double(double) noexcept'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                     ^
In file included from /usr/include/c++/11/random:51,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:108,
                 from chessboard.cpp:1:
/usr/include/c++/11/bits/random.tcc:982:5: note: candidate: 'template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::uniform_real_distribution<_IntType>&)'
  982 |     operator>>(std::basic_istream<_CharT, _Traits>& __is,
      |     ^~~~~~~~
/usr/include/c++/11/bits/random.tcc:982:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   mismatched types 'std::uniform_real_distribution<_IntType>' and 'double(double) noexcept'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                     ^
In file included from /usr/include/c++/11/random:51,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:108,
                 from chessboard.cpp:1:
/usr/include/c++/11/bits/random.tcc:2167:5: note: candidate: 'template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::cauchy_distribution<_RealType>&)'
 2167 |     operator>>(std::basic_istream<_CharT, _Traits>& __is,
      |     ^~~~~~~~
/usr/include/c++/11/bits/random.tcc:2167:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   mismatched types 'std::cauchy_distribution<_RealType>' and 'double(double) noexcept'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                     ^
In file included from /usr/include/c++/11/random:49,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:108,
                 from chessboard.cpp:1:
/usr/include/c++/11/bits/random.h:3722:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::bernoulli_distribution&)'
 3722 |     operator>>(std::basic_istream<_CharT, _Traits>& __is,
      |     ^~~~~~~~
/usr/include/c++/11/bits/random.h:3722:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   cannot convert '*(y1 + ((sizetype)i))' (type 'double(double) noexcept') to type 'std::bernoulli_distribution&'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                 ~~~~^
In file included from /usr/include/c++/11/random:51,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:108,
                 from chessboard.cpp:1:
/usr/include/c++/11/bits/random.tcc:1124:5: note: candidate: 'template<class _IntType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::geometric_distribution<_IntType>&)'
 1124 |     operator>>(std::basic_istream<_CharT, _Traits>& __is,
      |     ^~~~~~~~
/usr/include/c++/11/bits/random.tcc:1124:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   mismatched types 'std::geometric_distribution<_IntType>' and 'double(double) noexcept'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                     ^
In file included from /usr/include/c++/11/random:51,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:108,
                 from chessboard.cpp:1:
/usr/include/c++/11/bits/random.tcc:1775:5: note: candidate: 'template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::exponential_distribution<_RealType>&)'
 1775 |     operator>>(std::basic_istream<_CharT, _Traits>& __is,
      |     ^~~~~~~~
/usr/include/c++/11/bits/random.tcc:1775:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   mismatched types 'std::exponential_distribution<_RealType>' and 'double(double) noexcept'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                     ^
In file included from /usr/include/c++/11/random:51,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:108,
                 from chessboard.cpp:1:
/usr/include/c++/11/bits/random.tcc:2561:5: note: candidate: 'template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::weibull_distribution<_RealType>&)'
 2561 |     operator>>(std::basic_istream<_CharT, _Traits>& __is,
      |     ^~~~~~~~
/usr/include/c++/11/bits/random.tcc:2561:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   mismatched types 'std::weibull_distribution<_RealType>' and 'double(double) noexcept'
   22 |                 cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
      |                                     ^
In file included from /usr/include/c++/11/random:51,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:108,
                 from chessboard.cpp:1:
/usr/include/c++/11/bits/random.tcc:2635:5: note: candidate: 'template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::extreme_value_distribution<_RealType>&)'
 2635 |     operator>>(std::basic_istream<_CharT, _Traits>& __is,
      |     ^~~~~~~~
/usr/include/c++/11/bits/random.tcc:2635:5: note:   template argument deduction/substitution failed:
chessboard.cpp:22:37: note:   mismatched types 'std