Compilare: user.cpp: In function ‘void Solve()’: user.cpp:32:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(Val[X] != 0 && Val[X] <= G[X].size()) ^ user.cpp:51:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[node].size(); i++) ^ user.cpp:59:51: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < G[neighb].size(); j++) ^ user.cpp:50:13: warning: unused variable ‘cnt’ [-Wunused-variable] int cnt = 0; ^ user.cpp: In function ‘void Print()’: user.cpp:84:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Sol.size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:90:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("markon.out","w",stdout); ^