Compilare: main.cpp: In function 'void bfs(int, int)': main.cpp:41:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<L[nod].size();i++){ ~^~~~~~~~~~~~~~ main.cpp: In function 'int dfs(int, int, int)': main.cpp:60:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<edges[nod].size();i++){ ~^~~~~~~~~~~~~~~~~~