Compilare: main.cpp: In function 'void dfs1(int, int, int)': main.cpp:89:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 89 | for (int i = 0; i < g[node].size(); ++i) | ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'void dfs2(int, int)': main.cpp:106:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 106 | for (int i = 0; i < queries[node].size(); ++i) | ~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp:111:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 111 | for (int i = 0; i < setBack.size(); ++i) | ~~^~~~~~~~~~~~~~~~ main.cpp:116:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 116 | for (int i = 0; i < g[node].size(); ++i) | ~~^~~~~~~~~~~~~~~~