Compilare: user.cpp: In function ‘int solve2()’: user.cpp:63:53: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int p = 0; p < dp[vv].size(); p++) ^ user.cpp:76:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < dp[vv].size(); i++) ^ user.cpp: In function ‘void citire()’: user.cpp:17:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &k); ^ user.cpp: In function ‘int main()’: user.cpp:84:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("blis.in", "r", stdin); ^ user.cpp:85:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("blis.out", "w", stdout); ^