| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 1122539 | Trisanu_Das | Airplane (NOI23_airplane) | C++20 | Compilation error | 0 ms | 0 KiB |
#include <bits/stdc++.h>
using namespace std;
int main(){
int n, m;
cin >> n >> m;
vector<int> v(n);
vector<vector<int >> g(n);
for(auto &e:v) cin >> e;
for(int i=0; i<m; i++){
int a, b;
cin >> a >> b;
a--; b--;
g[a].push_back(b);
g[b].push_back(a);
}
vector<int> ans(n, -1), ans2(n, -1), tm(n, -1), tm2(n, -1);
priority_queue<tuple<int, int, int >> pq;
pq.push({0, 0, 0});
while(pq.size()){
auto [t, h, cur]=pq.top();
pq.pop();
if(tm[cur]!=-1) continue;
t=tm[cur]=-t;
h=ans[cur]=-h;
for(auto ch:g[cur]) pq.push({-max(v[ch], t + 1), -max(h, v[ch]), ch});
}
pq.push({0, 0, n-1});
while(pq.size()){
auto [t, h, cur]=pq.top();
pq.pop();
if(tm2[cur]!=-1) continue;
h=ans2[cur]=-h;
t=tm2[cur]=-t;
for(auto ch:g[cur]) pq.push({-max(v[ch], t + 1), -max(h, v[ch]), ch});
}
int ans = INT_MAX;
for(int i = 0; i < n; i++) ans=min(ans, tm[i] + tm2[i] + abs(ans[i] - ans2[i]));
cout << ans << '\n';
}
Compilation message (stderr)
Main.cpp: In function 'int main()':
Main.cpp:37:13: error: conflicting declaration 'int ans'
37 | int ans = INT_MAX;
| ^~~
Main.cpp:17:21: note: previous declaration as 'std::vector<int> ans'
17 | vector<int> ans(n, -1), ans2(n, -1), tm(n, -1), tm2(n, -1);
| ^~~
Main.cpp:38:43: error: no matching function for call to 'min(std::vector<int>&, __gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type)'
38 | for(int i = 0; i < n; i++) ans=min(ans, tm[i] + tm2[i] + abs(ans[i] - ans2[i]));
| ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from Main.cpp:1:
/usr/include/c++/11/bits/stl_algobase.h:230:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
230 | min(const _Tp& __a, const _Tp& __b)
| ^~~
/usr/include/c++/11/bits/stl_algobase.h:230:5: note: template argument deduction/substitution failed:
Main.cpp:38:43: note: deduced conflicting types for parameter 'const _Tp' ('std::vector<int>' and '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'})
38 | for(int i = 0; i < n; i++) ans=min(ans, tm[i] + tm2[i] + abs(ans[i] - ans2[i]));
| ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from Main.cpp:1:
/usr/include/c++/11/bits/stl_algobase.h:278:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
278 | min(const _Tp& __a, const _Tp& __b, _Compare __comp)
| ^~~
/usr/include/c++/11/bits/stl_algobase.h:278:5: note: template argument deduction/substitution failed:
Main.cpp:38:43: note: deduced conflicting types for parameter 'const _Tp' ('std::vector<int>' and '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'})
38 | for(int i = 0; i < n; i++) ans=min(ans, tm[i] + tm2[i] + abs(ans[i] - ans2[i]));
| ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/11/string:52,
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 Main.cpp:1:
/usr/include/c++/11/bits/stl_algo.h:3449:5: note: candidate: 'template<class _Tp> constexpr _Tp std::min(std::initializer_list<_Tp>)'
3449 | min(initializer_list<_Tp> __l)
| ^~~
/usr/include/c++/11/bits/stl_algo.h:3449:5: note: template argument deduction/substitution failed:
Main.cpp:38:43: note: 'std::vector<int>' is not derived from 'std::initializer_list<_Tp>'
38 | for(int i = 0; i < n; i++) ans=min(ans, tm[i] + tm2[i] + abs(ans[i] - ans2[i]));
| ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/11/string:52,
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 Main.cpp:1:
/usr/include/c++/11/bits/stl_algo.h:3455:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::min(std::initializer_list<_Tp>, _Compare)'
3455 | min(initializer_list<_Tp> __l, _Compare __comp)
| ^~~
/usr/include/c++/11/bits/stl_algo.h:3455:5: note: template argument deduction/substitution failed:
Main.cpp:38:43: note: 'std::vector<int>' is not derived from 'std::initializer_list<_Tp>'
38 | for(int i = 0; i < n; i++) ans=min(ans, tm[i] + tm2[i] + abs(ans[i] - ans2[i]));
| ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:39:14: error: no match for 'operator<<' (operand types are 'std::ostream' {aka 'std::basic_ostream<char>'} and 'std::vector<int>')
39 | cout << ans << '\n';
| ~~~~ ^~ ~~~
| | |
| | std::vector<int>
| std::ostream {aka std::basic_ostream<char>}
In file included from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/ostream:108:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(std::basic_ostream<_CharT, _Traits>::__ostream_type& (*)(std::basic_ostream<_CharT, _Traits>::__ostream_type&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream<char>]'
108 | operator<<(__ostream_type& (*__pf)(__ostream_type&))
| ^~~~~~~~
/usr/include/c++/11/ostream:108:36: note: no known conversion for argument 1 from 'std::vector<int>' to 'std::basic_ostream<char>::__ostream_type& (*)(std::basic_ostream<char>::__ostream_type&)' {aka 'std::basic_ostream<char>& (*)(std::basic_ostream<char>&)'}
108 | operator<<(__ostream_type& (*__pf)(__ostream_type&))
| ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/11/ostream:117:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(std::basic_ostream<_CharT, _Traits>::__ios_type& (*)(std::basic_ostream<_CharT, _Traits>::__ios_type&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream<char>; std::basic_ostream<_CharT, _Traits>::__ios_type = std::basic_ios<char>]'
117 | operator<<(__ios_type& (*__pf)(__ios_type&))
| ^~~~~~~~
/usr/include/c++/11/ostream:117:32: note: no known conversion for argument 1 from 'std::vector<int>' to 'std::basic_ostream<char>::__ios_type& (*)(std::basic_ostream<char>::__ios_type&)' {aka 'std::basic_ios<char>& (*)(std::basic_ios<char>&)'}
117 | operator<<(__ios_type& (*__pf)(__ios_type&))
| ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~
/usr/include/c++/11/ostream:127:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(std::ios_base& (*)(std::ios_base&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream<char>]'
127 | operator<<(ios_base& (*__pf) (ios_base&))
| ^~~~~~~~
/usr/include/c++/11/ostream:127:30: note: no known conversion for argument 1 from 'std::vector<int>' to 'std::ios_base& (*)(std::ios_base&)'
127 | operator<<(ios_base& (*__pf) (ios_base&))
| ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
/usr/include/c++/11/ostream:166:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long int) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream<char>]'
166 | operator<<(long __n)
| ^~~~~~~~
/usr/include/c++/11/ostream:166:23: note: no known conversion for argument 1 from 'std::vector<int>' to 'long int'
166 | operator<<(long __n)
| ~~~~~^~~
/usr/include/c++/11/ostream:170:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long unsigned int) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream<char>]'
170 | operator<<(unsigned long __n)
| ^~~~~~~~
/usr/include/c++/11/ostream:170:32: note: no known conversion for argument 1 from 'std::vector<int>' to 'long unsigned int'
170 | operator<<(unsigned long __n)
| ~~~~~~~~~~~~~~^~~
/usr/include/c++/11/ostream:174:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(bool) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream<char>]'
174 | operator<<(bool __n)
| ^~~~~~~~
/usr/include/c++/11/ostream:174:23: note: no known conversion for argument 1 from 'std::vector<int>' to 'bool'
174 | operator<<(bool __n)
| ~~~~~^~~
In file included from /usr/include/c++/11/ostream:829,
from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/bits/ostream.tcc:91:5: note: candidate: 'std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(short int) [with _CharT = char; _Traits = std::char_traits<char>]'
91 | basic_ostream<_CharT, _Traits>::
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/11/bits/ostream.tcc:92:22: note: no known conversion for argument 1 from 'std::vector<int>' to 'short int'
92 | operator<<(short __n)
| ~~~~~~^~~
In file included from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/ostream:181:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(short unsigned int) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream<char>]'
181 | operator<<(unsigned short __n)
| ^~~~~~~~
/usr/include/c++/11/ostream:181:33: note: no known conversion for argument 1 from 'std::vector<int>' to 'short unsigned int'
181 | operator<<(unsigned short __n)
| ~~~~~~~~~~~~~~~^~~
In file included from /usr/include/c++/11/ostream:829,
from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/bits/ostream.tcc:105:5: note: candidate: 'std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(int) [with _CharT = char; _Traits = std::char_traits<char>]'
105 | basic_ostream<_CharT, _Traits>::
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/11/bits/ostream.tcc:106:20: note: no known conversion for argument 1 from 'std::vector<int>' to 'int'
106 | operator<<(int __n)
| ~~~~^~~
In file included from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/ostream:192:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(unsigned int) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream<char>]'
192 | operator<<(unsigned int __n)
| ^~~~~~~~
/usr/include/c++/11/ostream:192:31: note: no known conversion for argument 1 from 'std::vector<int>' to 'unsigned int'
192 | operator<<(unsigned int __n)
| ~~~~~~~~~~~~~^~~
/usr/include/c++/11/ostream:201:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long long int) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream<char>]'
201 | operator<<(long long __n)
| ^~~~~~~~
/usr/include/c++/11/ostream:201:28: note: no known conversion for argument 1 from 'std::vector<int>' to 'long long int'
201 | operator<<(long long __n)
| ~~~~~~~~~~^~~
/usr/include/c++/11/ostream:205:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long long unsigned int) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream<char>]'
205 | operator<<(unsigned long long __n)
| ^~~~~~~~
/usr/include/c++/11/ostream:205:37: note: no known conversion for argument 1 from 'std::vector<int>' to 'long long unsigned int'
205 | operator<<(unsigned long long __n)
| ~~~~~~~~~~~~~~~~~~~^~~
/usr/include/c++/11/ostream:220:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(double) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream<char>]'
220 | operator<<(double __f)
| ^~~~~~~~
/usr/include/c++/11/ostream:220:25: note: no known conversion for argument 1 from 'std::vector<int>' to 'double'
220 | operator<<(double __f)
| ~~~~~~~^~~
/usr/include/c++/11/ostream:224:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(float) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream<char>]'
224 | operator<<(float __f)
| ^~~~~~~~
/usr/include/c++/11/ostream:224:24: note: no known conversion for argument 1 from 'std::vector<int>' to 'float'
224 | operator<<(float __f)
| ~~~~~~^~~
/usr/include/c++/11/ostream:232:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long double) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream<char>]'
232 | operator<<(long double __f)
| ^~~~~~~~
/usr/include/c++/11/ostream:232:30: note: no known conversion for argument 1 from 'std::vector<int>' to 'long double'
232 | operator<<(long double __f)
| ~~~~~~~~~~~~^~~
/usr/include/c++/11/ostream:245:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(const void*) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream<char>]'
245 | operator<<(const void* __p)
| ^~~~~~~~
/usr/include/c++/11/ostream:245:30: note: no known conversion for argument 1 from 'std::vector<int>' to 'const void*'
245 | operator<<(const void* __p)
| ~~~~~~~~~~~~^~~
/usr/include/c++/11/ostream:250:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(std::nullptr_t) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream<char>; std::nullptr_t = std::nullptr_t]'
250 | operator<<(nullptr_t)
| ^~~~~~~~
/usr/include/c++/11/ostream:250:18: note: no known conversion for argument 1 from 'std::vector<int>' to 'std::nullptr_t'
250 | operator<<(nullptr_t)
| ^~~~~~~~~
In file included from /usr/include/c++/11/ostream:829,
from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/bits/ostream.tcc:119:5: note: candidate: 'std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(std::basic_ostream<_CharT, _Traits>::__streambuf_type*) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_ostream<_CharT, _Traits>::__streambuf_type = std::basic_streambuf<char>]'
119 | basic_ostream<_CharT, _Traits>::
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/11/bits/ostream.tcc:120:34: note: no known conversion for argument 1 from 'std::vector<int>' to 'std::basic_ostream<char>::__streambuf_type*' {aka 'std::basic_streambuf<char>*'}
120 | operator<<(__streambuf_type* __sbin)
| ~~~~~~~~~~~~~~~~~~^~~~~~
In file included from /usr/include/c++/11/regex:63,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:110,
from Main.cpp:1:
/usr/include/c++/11/bits/regex.h:1671:5: note: candidate: 'template<class _Ch_type, class _Ch_traits, class _Bi_iter> std::basic_ostream<_CharT, _Traits>& std::__cxx11::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::__cxx11::sub_match<_Bi_iter>&)'
1671 | operator<<(basic_ostream<_Ch_type, _Ch_traits>& __os,
| ^~~~~~~~
/usr/include/c++/11/bits/regex.h:1671:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: 'std::vector<int>' is not derived from 'const std::__cxx11::sub_match<_Bi_iter>'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:45,
from Main.cpp:1:
/usr/include/c++/11/cstddef:126:5: note: candidate: 'template<class _IntegerType> constexpr std::__byte_op_t<_IntegerType> std::operator<<(std::byte, _IntegerType)'
126 | operator<<(byte __b, _IntegerType __shift) noexcept
| ^~~~~~~~
/usr/include/c++/11/cstddef:126:5: note: template argument deduction/substitution failed:
Main.cpp:39:9: note: cannot convert 'std::cout' (type 'std::ostream' {aka 'std::basic_ostream<char>'}) to type 'std::byte'
39 | cout << ans << '\n';
| ^~~~
In file included from /usr/include/c++/11/bits/basic_string.h:48,
from /usr/include/c++/11/string:55,
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 Main.cpp:1:
/usr/include/c++/11/string_view:667:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, std::basic_string_view<_CharT, _Traits>)'
667 | operator<<(basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/usr/include/c++/11/string_view:667:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: 'std::vector<int>' is not derived from 'std::basic_string_view<_CharT, _Traits>'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/c++/11/string:55,
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 Main.cpp:1:
/usr/include/c++/11/bits/basic_string.h:6531:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
6531 | operator<<(basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/usr/include/c++/11/bits/basic_string.h:6531:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: 'std::vector<int>' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/c++/11/bits/ios_base.h:46,
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 Main.cpp:1:
/usr/include/c++/11/system_error:279:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::error_code&)'
279 | operator<<(basic_ostream<_CharT, _Traits>& __os, const error_code& __e)
| ^~~~~~~~
/usr/include/c++/11/system_error:279:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: cannot convert 'ans' (type 'std::vector<int>') to type 'const std::error_code&'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/ostream:513:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, _CharT)'
513 | operator<<(basic_ostream<_CharT, _Traits>& __out, _CharT __c)
| ^~~~~~~~
/usr/include/c++/11/ostream:513:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: deduced conflicting types for parameter '_CharT' ('char' and 'std::vector<int>')
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/ostream:518:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, char)'
518 | operator<<(basic_ostream<_CharT, _Traits>& __out, char __c)
| ^~~~~~~~
/usr/include/c++/11/ostream:518:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: cannot convert 'ans' (type 'std::vector<int>') to type 'char'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/ostream:524:5: note: candidate: 'template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, char)'
524 | operator<<(basic_ostream<char, _Traits>& __out, char __c)
| ^~~~~~~~
/usr/include/c++/11/ostream:524:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: cannot convert 'ans' (type 'std::vector<int>') to type 'char'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/ostream:530:5: note: candidate: 'template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, signed char)'
530 | operator<<(basic_ostream<char, _Traits>& __out, signed char __c)
| ^~~~~~~~
/usr/include/c++/11/ostream:530:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: cannot convert 'ans' (type 'std::vector<int>') to type 'signed char'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/ostream:535:5: note: candidate: 'template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, unsigned char)'
535 | operator<<(basic_ostream<char, _Traits>& __out, unsigned char __c)
| ^~~~~~~~
/usr/include/c++/11/ostream:535:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: cannot convert 'ans' (type 'std::vector<int>') to type 'unsigned char'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/ostream:544:5: note: candidate: 'template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, wchar_t)' (deleted)
544 | operator<<(basic_ostream<char, _Traits>&, wchar_t) = delete;
| ^~~~~~~~
/usr/include/c++/11/ostream:544:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: cannot convert 'ans' (type 'std::vector<int>') to type 'wchar_t'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/ostream:549:5: note: candidate: 'template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, char8_t)' (deleted)
549 | operator<<(basic_ostream<char, _Traits>&, char8_t) = delete;
| ^~~~~~~~
/usr/include/c++/11/ostream:549:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: cannot convert 'ans' (type 'std::vector<int>') to type 'char8_t'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/ostream:554:5: note: candidate: 'template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, char16_t)' (deleted)
554 | operator<<(basic_ostream<char, _Traits>&, char16_t) = delete;
| ^~~~~~~~
/usr/include/c++/11/ostream:554:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: cannot convert 'ans' (type 'std::vector<int>') to type 'char16_t'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/ostream:558:5: note: candidate: 'template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, char32_t)' (deleted)
558 | operator<<(basic_ostream<char, _Traits>&, char32_t) = delete;
| ^~~~~~~~
/usr/include/c++/11/ostream:558:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: cannot convert 'ans' (type 'std::vector<int>') to type 'char32_t'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/ostream:564:5: note: candidate: 'template<class _Traits> std::basic_ostream<wchar_t, _Traits>& std::operator<<(std::basic_ostream<wchar_t, _Traits>&, char8_t)' (deleted)
564 | operator<<(basic_ostream<wchar_t, _Traits>&, char8_t) = delete;
| ^~~~~~~~
/usr/include/c++/11/ostream:564:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: mismatched types 'wchar_t' and 'char'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/ostream:569:5: note: candidate: 'template<class _Traits> std::basic_ostream<wchar_t, _Traits>& std::operator<<(std::basic_ostream<wchar_t, _Traits>&, char16_t)' (deleted)
569 | operator<<(basic_ostream<wchar_t, _Traits>&, char16_t) = delete;
| ^~~~~~~~
/usr/include/c++/11/ostream:569:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: mismatched types 'wchar_t' and 'char'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/ostream:573:5: note: candidate: 'template<class _Traits> std::basic_ostream<wchar_t, _Traits>& std::operator<<(std::basic_ostream<wchar_t, _Traits>&, char32_t)' (deleted)
573 | operator<<(basic_ostream<wchar_t, _Traits>&, char32_t) = delete;
| ^~~~~~~~
/usr/include/c++/11/ostream:573:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: mismatched types 'wchar_t' and 'char'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/ostream:594:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const _CharT*)'
594 | operator<<(basic_ostream<_CharT, _Traits>& __out, const _CharT* __s)
| ^~~~~~~~
/usr/include/c++/11/ostream:594:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: mismatched types 'const _CharT*' and 'std::vector<int>'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/c++/11/ostream:829,
from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/bits/ostream.tcc:321:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const char*)'
321 | operator<<(basic_ostream<_CharT, _Traits>& __out, const char* __s)
| ^~~~~~~~
/usr/include/c++/11/bits/ostream.tcc:321:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: cannot convert 'ans' (type 'std::vector<int>') to type 'const char*'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/ostream:611:5: note: candidate: 'template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const char*)'
611 | operator<<(basic_ostream<char, _Traits>& __out, const char* __s)
| ^~~~~~~~
/usr/include/c++/11/ostream:611:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: cannot convert 'ans' (type 'std::vector<int>') to type 'const char*'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/ostream:624:5: note: candidate: 'template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const signed char*)'
624 | operator<<(basic_ostream<char, _Traits>& __out, const signed char* __s)
| ^~~~~~~~
/usr/include/c++/11/ostream:624:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: cannot convert 'ans' (type 'std::vector<int>') to type 'const signed char*'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/ostream:629:5: note: candidate: 'template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const unsigned char*)'
629 | operator<<(basic_ostream<char, _Traits>& __out, const unsigned char* __s)
| ^~~~~~~~
/usr/include/c++/11/ostream:629:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: cannot convert 'ans' (type 'std::vector<int>') to type 'const unsigned char*'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/ostream:638:5: note: candidate: 'template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const wchar_t*)' (deleted)
638 | operator<<(basic_ostream<char, _Traits>&, const wchar_t*) = delete;
| ^~~~~~~~
/usr/include/c++/11/ostream:638:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: cannot convert 'ans' (type 'std::vector<int>') to type 'const wchar_t*'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/ostream:643:5: note: candidate: 'template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const char8_t*)' (deleted)
643 | operator<<(basic_ostream<char, _Traits>&, const char8_t*) = delete;
| ^~~~~~~~
/usr/include/c++/11/ostream:643:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: cannot convert 'ans' (type 'std::vector<int>') to type 'const char8_t*'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/ostream:648:5: note: candidate: 'template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const char16_t*)' (deleted)
648 | operator<<(basic_ostream<char, _Traits>&, const char16_t*) = delete;
| ^~~~~~~~
/usr/include/c++/11/ostream:648:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: cannot convert 'ans' (type 'std::vector<int>') to type 'const char16_t*'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/ostream:652:5: note: candidate: 'template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const char32_t*)' (deleted)
652 | operator<<(basic_ostream<char, _Traits>&, const char32_t*) = delete;
| ^~~~~~~~
/usr/include/c++/11/ostream:652:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: cannot convert 'ans' (type 'std::vector<int>') to type 'const char32_t*'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/ostream:658:5: note: candidate: 'template<class _Traits> std::basic_ostream<wchar_t, _Traits>& std::operator<<(std::basic_ostream<wchar_t, _Traits>&, const char8_t*)' (deleted)
658 | operator<<(basic_ostream<wchar_t, _Traits>&, const char8_t*) = delete;
| ^~~~~~~~
/usr/include/c++/11/ostream:658:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: mismatched types 'wchar_t' and 'char'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/ostream:663:5: note: candidate: 'template<class _Traits> std::basic_ostream<wchar_t, _Traits>& std::operator<<(std::basic_ostream<wchar_t, _Traits>&, const char16_t*)' (deleted)
663 | operator<<(basic_ostream<wchar_t, _Traits>&, const char16_t*) = delete;
| ^~~~~~~~
/usr/include/c++/11/ostream:663:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: mismatched types 'wchar_t' and 'char'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/ostream:667:5: note: candidate: 'template<class _Traits> std::basic_ostream<wchar_t, _Traits>& std::operator<<(std::basic_ostream<wchar_t, _Traits>&, const char32_t*)' (deleted)
667 | operator<<(basic_ostream<wchar_t, _Traits>&, const char32_t*) = delete;
| ^~~~~~~~
/usr/include/c++/11/ostream:667:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: mismatched types 'wchar_t' and 'char'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/c++/11/istream:39,
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 Main.cpp:1:
/usr/include/c++/11/ostream:750:5: note: candidate: 'template<class _Ostream, class _Tp> _Ostream&& std::operator<<(_Ostream&&, const _Tp&)'
750 | operator<<(_Ostream&& __os, const _Tp& __x)
| ^~~~~~~~
/usr/include/c++/11/ostream:750:5: note: template argument deduction/substitution failed:
/usr/include/c++/11/ostream: In substitution of 'template<class _Ostream, class _Tp> _Ostream&& std::operator<<(_Ostream&&, const _Tp&) [with _Ostream = std::basic_ostream<char>&; _Tp = std::vector<int>]':
Main.cpp:39:10: required from here
/usr/include/c++/11/ostream:750:5: error: template constraint failure for 'template<class _Os, class _Tp> requires (__derived_from_ios_base<_Os>) && requires(_Os& __os, const _Tp& __t) {__os << __t;} using __rvalue_stream_insertion_t = _Os&&'
/usr/include/c++/11/ostream:750:5: note: constraints not satisfied
/usr/include/c++/11/ostream: In substitution of 'template<class _Os, class _Tp> requires (__derived_from_ios_base<_Os>) && requires(_Os& __os, const _Tp& __t) {__os << __t;} using __rvalue_stream_insertion_t = _Os&& [with _Os = std::basic_ostream<char>&; _Tp = std::vector<int>]':
/usr/include/c++/11/ostream:750:5: required by substitution of 'template<class _Ostream, class _Tp> _Ostream&& std::operator<<(_Ostream&&, const _Tp&) [with _Ostream = std::basic_ostream<char>&; _Tp = std::vector<int>]'
Main.cpp:39:10: required from here
/usr/include/c++/11/ostream:717:13: required for the satisfaction of '__derived_from_ios_base<_Os>' [with _Os = std::basic_ostream<char, std::char_traits<char> >&]
/usr/include/c++/11/ostream:717:39: note: the expression 'is_class_v<_Tp> [with _Tp = std::basic_ostream<char, std::char_traits<char> >&]' evaluated to 'false'
717 | concept __derived_from_ios_base = is_class_v<_Tp>
| ^~~~~~~~~~~~~~~
In file included from /usr/include/c++/11/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
from Main.cpp:1:
/usr/include/c++/11/complex:555:5: note: candidate: 'template<class _Tp, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::complex<_Tp>&)'
555 | operator<<(basic_ostream<_CharT, _Traits>& __os, const complex<_Tp>& __x)
| ^~~~~~~~
/usr/include/c++/11/complex:555:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: 'std::vector<int>' is not derived from 'const std::complex<_Tp>'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:66,
from Main.cpp:1:
/usr/include/c++/11/bitset:1540:5: note: candidate: 'template<class _CharT, class _Traits, long unsigned int _Nb> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::bitset<_Nb>&)'
1540 | operator<<(std::basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/usr/include/c++/11/bitset:1540:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: 'std::vector<int>' is not derived from 'const std::bitset<_Nb>'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/c++/11/bits/locale_conv.h:41,
from /usr/include/c++/11/locale:43,
from /usr/include/c++/11/iomanip:43,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:72,
from Main.cpp:1:
/usr/include/c++/11/bits/unique_ptr.h:1003:5: note: candidate: 'template<class _CharT, class _Traits, class _Tp, class _Dp> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::unique_ptr<_Up, _Ep>&) requires requires{std::operator<<::__os << std::operator<<::__p->get();}'
1003 | operator<<(basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/usr/include/c++/11/bits/unique_ptr.h:1003:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: 'std::vector<int>' is not derived from 'const std::unique_ptr<_Up, _Ep>'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:72,
from Main.cpp:1:
/usr/include/c++/11/iomanip:79:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, std::_Resetiosflags)'
79 | operator<<(basic_ostream<_CharT, _Traits>& __os, _Resetiosflags __f)
| ^~~~~~~~
/usr/include/c++/11/iomanip:79:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: cannot convert 'ans' (type 'std::vector<int>') to type 'std::_Resetiosflags'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:72,
from Main.cpp:1:
/usr/include/c++/11/iomanip:109:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, std::_Setiosflags)'
109 | operator<<(basic_ostream<_CharT, _Traits>& __os, _Setiosflags __f)
| ^~~~~~~~
/usr/include/c++/11/iomanip:109:5: note: template argument deduction/substitution failed:
Main.cpp:39:17: note: cannot convert 'ans' (type 'std::vector<int>') to type 'std::_Setiosflags'
39 | cout << ans << '\n';
| ^~~
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:72,
from Main.cpp:1:
/usr/include/c++/11/iomanip:143:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_Char