Compilare: main.cpp: In function 'void DFS(int)': main.cpp:23:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < Ad[nod].size(); ++i ) ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'void DFS_R(int)': main.cpp:39:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < Ad_r[nod].size(); ++i ) ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'void Solve()': main.cpp:80:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( vmax < C[i].size() ) ~~~~~^~~~~~~~~~~~~ main.cpp:88:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < C[comp].size(); ++i ) ~~^~~~~~~~~~~~~~~~