1833001_tle.c

北大大牛代码 1240道题的原代码 超级权威

# include <stdio.h>

long C(long x, long y)
{
  long i, sum;
  sum = 1;
  for(i = y; i >= y - x + 1; i--)
  sum *= i;
  for(i = 1; i <= x; i++)
  sum /= i;
  return sum;
  
}

void main()
{
  long x, y;
  
  while(1)
  {
   scanf("%ld%ld",&x,&y);
   if(!x&&!y) break;
   else printf("%ld\n",C(x,y+x));
  }
}