Compilare: user.cpp: In function ‘long long int ve(int)’: user.cpp:23:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(mp.size()>z) ^ user.cpp: In function ‘unsigned int getint()’: user.cpp:43:40: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buf,maxb,1,fin),ptr=0; ^ user.cpp:48:40: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buf,maxb,1,fin),ptr=0; ^