Compilare: main.cpp: In function 'void dfs(int)': main.cpp:17:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 17 | for(int l=0;l<G[k].size();l++) | ~^~~~~~~~~~~~ main.cpp: In function 'void dfs1(int, int)': main.cpp:31:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 31 | for(int l=0;l<G[k].size();l++) | ~^~~~~~~~~~~~ main.cpp:39:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | for(int l=0;l<G[k].size();l++) | ~^~~~~~~~~~~~