Compilare: main.cpp: In function 'int main()': main.cpp:42:29: warning: comparison of integer expressions of different signedness: 'std::set<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 42 | if(adj[i].size()==total) | ~~~~~~~~~~~~~^~~~~~~ main.cpp:57:65: warning: comparison of integer expressions of different signedness: 'std::set<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 57 | if(*s.begin()>i and adj[i].size()+adj[*s.begin()].size()==total){ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~