Compilare: main.cpp: In function 'void DFS1(int)': main.cpp:33:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | for(int i=0; i<graph[nod].size(); i++) | ~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'void DFS2(int)': main.cpp:48:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 48 | for(int i=0; i<graph_tr[nod].size(); i++) | ~^~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void BFS(int)': main.cpp:73:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 73 | for(int i=0; i<graph_ctc[nod].size(); i++) | ~^~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:113:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 113 | for(int j=0; j<graph[i].size(); j++) | ~^~~~~~~~~~~~~~~~