Eroare de compilare: main.cpp: In function 'int main()': main.cpp:67:10: warning: left operand of comma operator has no effect [-Wunused-value] 67 | mp[x, y] = true; | ^ main.cpp:67:9: error: no match for 'operator[]' (operand types are 'std::map<std::pair<double, double>, bool>' and 'double') 67 | mp[x, y] = true; | ^ In file included from /usr/include/c++/10/map:61, from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:81, from main.cpp:1: /usr/include/c++/10/bits/stl_map.h:492:7: note: candidate: 'std::map<_Key, _Tp, _Compare, _Alloc>::mapped_type& std::map<_Key, _Tp, _Compare, _Alloc>::operator[](const key_type&) [with _Key = std::pair<double, double>; _Tp = bool; _Compare = std::less<std::pair<double, double> >; _Alloc = std::allocator<std::pair<const std::pair<double, double>, bool> >; std::map<_Key, _Tp, _Compare, _Alloc>::mapped_type = bool; std::map<_Key, _Tp, _Compare, _Alloc>::key_type = std::pair<double, double>]' 492 | operator[](const key_type& __k) | ^~~~~~~~ /usr/include/c++/10/bits/stl_map.h:492:34: note: no known conversion for argument 1 from 'double' to 'const key_type&' {aka 'const std::pair<double, double>&'} 492 | operator[](const key_type& __k) | ~~~~~~~~~~~~~~~~^~~ /usr/include/c++/10/bits/stl_map.h:512:7: note: candidate: 'std::map<_Key, _Tp, _Compare, _Alloc>::mapped_type& std::map<_Key, _Tp, _Compare, _Alloc>::operator[](std::map<_Key, _Tp, _Compare, _Alloc>::key_type&&) [with _Key = std::pair<double, double>; _Tp = bool; _Compare = std::less<std::pair<double, double> >; _Alloc = std::allocator<std::pair<const std::pair<double, double>, bool> >; std::map<_Key, _Tp, _Compare, _Alloc>::mapped_type = bool; std::map<_Key, _Tp, _Compare, _Alloc>::key_type = std::pair<double, double>]' 512 | operator[](key_type&& __k) | ^~~~~~~~ /usr/include/c++/10/bits/stl_map.h:512:29: note: no known conversion for argument 1 from 'double' to 'std::map<std::pair<double, double>, bool>::key_type&&' {aka 'std::pair<double, double>&&'} 512 | operator[](key_type&& __k) | ~~~~~~~~~~~^~~ main.cpp:83:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<double, double> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 83 | for (int i = 2; i < hull.size(); ++i) | ~~^~~~~~~~~~~~~ main.cpp:90:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<double, double> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 90 | for (int i = 0; i < hull.size(); ++i) { | ~~^~~~~~~~~~~~~ main.cpp:98:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<double, double> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 98 | for (int i = 1; i < hull.size(); ++i) { | ~~^~~~~~~~~~~~~ Non zero exit status: 1