Compilare: main.cpp: In function 'void BFS(int)': main.cpp:24:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | for(int i=0;i<a[nc].size();i++) | ~^~~~~~~~~~~~~ main.cpp: In function 'int DFS(int)': main.cpp:39:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | for(int i=0;i<a[nod].size();i++) | ~^~~~~~~~~~~~~~ main.cpp:47:1: warning: no return statement in function returning non-void [-Wreturn-type] 47 | } | ^