Eroare de compilare: main.cpp: In function 'bool dfs(int, int)': main.cpp:43:12: warning: unused variable 'ok' [-Wunused-variable] 43 | bool ok = dfs(it.x, flow); | ^~ main.cpp: In function 'int main()': main.cpp:71:8: error: no match for 'operator>>' (operand types are 'std::ofstream' {aka 'std::basic_ofstream<char>'} and 'int') 71 | fout >> n >> m; | ~~~~ ^~ ~ | | | | | int | std::ofstream {aka std::basic_ofstream<char>} main.cpp:71:8: note: candidate: 'operator>>(int, int)' (built-in) 71 | fout >> n >> m; | ~~~~~^~~~ main.cpp:71:8: note: no known conversion for argument 1 from 'std::ofstream' {aka 'std::basic_ofstream<char>'} to 'int' In file included from /usr/include/c++/12.2.1/x86_64-pc-linux-gnu/bits/stdc++.h:45, from main.cpp:1: /usr/include/c++/12.2.1/cstddef:128:5: note: candidate: 'template<class _IntegerType> constexpr std::__byte_op_t<_IntegerType> std::operator>>(byte, _IntegerType)' 128 | operator>>(byte __b, _IntegerType __shift) noexcept | ^~~~~~~~ /usr/include/c++/12.2.1/cstddef:128:5: note: template argument deduction/substitution failed: main.cpp:71:3: note: cannot convert 'fout' (type 'std::ofstream' {aka 'std::basic_ofstream<char>'}) to type 'std::byte' 71 | fout >> n >> m; | ^~~~ In file included from /usr/include/c++/12.2.1/string:54, from /usr/include/c++/12.2.1/bits/locale_classes.h:40, from /usr/include/c++/12.2.1/bits/ios_base.h:41, from /usr/include/c++/12.2.1/ios:42, from /usr/include/c++/12.2.1/istream:38, from /usr/include/c++/12.2.1/sstream:38, from /usr/include/c++/12.2.1/complex:45, from /usr/include/c++/12.2.1/ccomplex:39, from /usr/include/c++/12.2.1/x86_64-pc-linux-gnu/bits/stdc++.h:54: /usr/include/c++/12.2.1/bits/basic_string.tcc:940:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, __cxx11::basic_string<_CharT, _Traits, _Allocator>&)' 940 | operator>>(basic_istream<_CharT, _Traits>& __in, | ^~~~~~~~ /usr/include/c++/12.2.1/bits/basic_string.tcc:940:5: note: template argument deduction/substitution failed: main.cpp:71:11: note: 'std::ofstream' {aka 'std::basic_ofstream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>' 71 | fout >> n >> m; | ^ In file included from /usr/include/c++/12.2.1/istream:1016: /usr/include/c++/12.2.1/bits/istream.tcc:960:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _CharT&)' 960 | operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c) | ^~~~~~~~ /usr/include/c++/12.2.1/bits/istream.tcc:960:5: note: template argument deduction/substitution failed: main.cpp:71:11: note: 'std::ofstream' {aka 'std::basic_ofstream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>' 71 | fout >> n >> m; | ^ /usr/include/c++/12.2.1/istream:756:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, unsigned char&)' 756 | operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c) Non zero exit status: 1