Compilare: user.cpp: In function ‘void Add_To_Hash(unsigned int)’: user.cpp:18:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<h[x%MOD].size();i++) ^ user.cpp: In function ‘int Search_In_Hash(unsigned int)’: user.cpp:28:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<h[val%MOD].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:39:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=3;i<=N;i++) ^ user.cpp:41:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=N;i++) ^ user.cpp:43:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=M;i++) ^ user.cpp:34:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("muzica.in","r",stdin); ^ user.cpp:35:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("muzica.out","w",stdout); ^ user.cpp:37:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&M,&N); ^ user.cpp:38:46: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%u%u%d%d%d",&R[1],&R[2],&M1,&M2,&mod); ^ user.cpp:45:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%u",&x); ^