Compilare: main.cpp: In function 'int main()': main.cpp:57:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::set<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 57 | if(maxarea>s[i].size()) | ~~~~~~~^~~~~~~~~~~~ main.cpp:62:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::set<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 62 | else if(maxarea==s[i].size()) | ~~~~~~~^~~~~~~~~~~~~