Compilare: main.cpp: In function 'int bfs_d(int, int)': main.cpp:50:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | for(int i=0; i<adc[nod].size(); i++){ | ~^~~~~~~~~~~~~~~~ main.cpp: In function 'int dfs_d(int, int, int, int*)': main.cpp:65:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 65 | for(; start[u]<adc[u].size(); start[u]++){ | ~~~~~~~~^~~~~~~~~~~~~~