Compilare: user.cpp: In function ‘void Solve()’: user.cpp:85:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < V.size(); ++i) ^ user.cpp: In function ‘void Read()’: user.cpp:15:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d ", &n, &k); ^