Compilare: user.cpp: In function ‘long long int findMin(int, int)’: user.cpp:33:14: warning: variable ‘ma’ set but not used [-Wunused-but-set-variable] int k=0, ma; ^ user.cpp: In function ‘int main()’: user.cpp:69:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1; i<=n; i++) ^ user.cpp:72:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=1; j<n-i+1; j++) ^ user.cpp:65:30: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff,1,20000,stdin); ^ user.cpp: In function ‘void read(long unsigned int&)’: user.cpp:16:103: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] while(buff[pos] < '0' || buff[pos] > '9') if(++pos == 20000) fread(buff, 1, 20000, stdin), pos = 0; ^ user.cpp:21:66: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if(++pos == 20000) fread(buff, 1, 290000, stdin), pos = 0; ^