Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:37:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | for(int i=0; i<g[nod].size(); i++) { | ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:76:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 76 | for(int i=0;i<ans.size();i++) | ~^~~~~~~~~~~