Compilare: user.cpp: In function ‘void DFS(int, bool*, long long int*)’: user.cpp:10:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<muchii[i].size();j++) ^ user.cpp:16:52: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int l=0;l<intra[muchii[i][j]].size();l++) ^ user.cpp: In function ‘int main()’: user.cpp:71:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<muchii[i].size();j++) ^ user.cpp:72:52: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k=j+1;k<muchii[i].size();k++) ^