Compilare: user.cpp: In function ‘bool Search(int, int, int)’: user.cpp:28:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Hash[t][S].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:53:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%d%d%d%d",&N,&M,&W,&H); ^ user.cpp:57:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%d%d",&A,&B); ^ user.cpp:66:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%d%d",&A,&B); ^