Compilare: main.cpp: In function 'void DFS(int, int)': main.cpp:22:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < Ad[nod].size(); ++i ) ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'void Solve()': main.cpp:57:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < Sol.size(); ++i ) ~~^~~~~~~~~~~~