# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
1134180 | Agageldi | Chessboard (IZhO18_chessboard) | C++17 | Compilation error | 0 ms | 0 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