Compilare: main.cpp: In function 'void DFS(int, int)': main.cpp:34:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < Ad[nod].size(); ++i ) ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int DFSS(int, int)': main.cpp:71:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < Ad[nod].size(); ++i ) ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'void Back(int)': main.cpp:83:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = x[k-1] + 1; i < M.size(); ++i ) ~~^~~~~~~~~~