Compilare: main.cpp: In function 'void BFS(int, int)': main.cpp:58:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 58 | for(int i = 0;i < g[from].size();i++) { | ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int doPush(int, int, int)': main.cpp:73:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 73 | for(int &i = edge_ind[node];i < g[node].size();i++) { | ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'void buildGraph(int)': main.cpp:104:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 104 | for(int k = 0;k < edges.size();k += 2) { | ~~^~~~~~~~~~~~~~ main.cpp:111:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 111 | for(int i = 0;i < ans.size();i++) { | ~~^~~~~~~~~~~~