Compilare: user.cpp: In function ‘bool Is_In_Hash(int, int)’: user.cpp:54:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Hash[S].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:93:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G2.size();i++) ^ user.cpp:78:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%d\n",&T); ^ user.cpp:87:22: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(str,60000,IN); ^