Compilare: user.cpp: In function ‘void Print()’: user.cpp:28:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<g[i].size();j++) ^ user.cpp: In function ‘void BFS(int, int)’: user.cpp:42:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[actual].size();i++) ^ user.cpp: In function ‘void init()’: user.cpp:56:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[S].size();i++) ^