Compilare: user.cpp: In function ‘void Solve()’: user.cpp:57:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<V[p].size();j++) ^ user.cpp:70:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<V[i].size();j++) ^ user.cpp:76:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<V[i].size();j++) ^ user.cpp: In function ‘int main()’: user.cpp:89:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("mexc.out","w",stdout); ^