Compilare: user.cpp: In function ‘void Add_To_Hash(unsigned int)’: user.cpp:15:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<h[nr%MOD].size();i++) ^ user.cpp: In function ‘int Search(unsigned int)’: user.cpp:22:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<h[nr%MOD].size();i++) ^ user.cpp: In function ‘long long int seq(int)’: user.cpp:28:10: warning: unused variable ‘size’ [-Wunused-variable] int d=0,size=0,aux,j=1; ^ user.cpp: In function ‘int main()’: user.cpp:56:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<h[i].size();j++) ^ user.cpp: In function ‘int Search(unsigned int)’: user.cpp:24:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:46:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv5.in","r",stdin); ^ user.cpp:47:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv5.out","w",stdout); ^ user.cpp:49:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&N,&L,&U); ^ user.cpp:52:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&S[i]); ^