Compilare: main.cpp: In function 'void Dfs(int)': main.cpp:38:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < Ad[nod].size(); ++i ) { ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'void Do()': main.cpp:47:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < B.size(); ++i ) ~~^~~~~~~~~~ main.cpp:54:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < prnt.size(); ++i ) ~~^~~~~~~~~~~~~