Compilare: main.cpp: In function 'void dfs(int)': main.cpp:26:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | for(int i=0;i<gr[node].size();++i) | ~^~~~~~~~~~~~~~~~ main.cpp: In function 'void adaugare_muchii()': main.cpp:77:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 77 | for(int j=0;j<first.size()&&ok;++j) | ~^~~~~~~~~~~~~ main.cpp:79:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 79 | for(int k=0;k<second.size()&&ok;++k) | ~^~~~~~~~~~~~~~