07/11/27 13:21:20
#include<stdio.h>
int mod(int m, int n)
{
int i, num[16]={1,2,4,8,16,32,64,128,256,512,1024,2048,4096,8192,16384,32768};
if(m<0 || n<0) return -1;
for(i=16-1;i>=0;i--)
if(m>=num[i]*n)
m-=num[i]*n;
return m;
}
int main(void)
{
mod(20000, 15);
return 0;
}