杭电acm1570

http://acm.hdu.edu.cn/showproblem.php?pid=1570

数字较小,打表,然后,过

View Code
 1 #include<stdio.h>
 2 int main()
 3 {
 4    int i,a[20],n,m,t,ans;
 5    char s[3];
 6    a[1]=a[0]=1;
 7    for(i=2;i<=10;i++)
 8       a[i]=a[i-1]*i;
 9    scanf("%d",&t);
10    gets(s);
11    while(t--)
12    {
13      scanf("%s%d%d",&s,&n,&m);
14      if(s[0]=='A')
15        ans=a[n]/a[n-m];
16      else ans=a[n]/(a[m]*a[n-m]);
17      printf("%d\n",ans);
18    }
19    return 0;
20 }

 

posted @ 2013-04-19 21:35  执着追求的IT小小鸟  阅读(118)  评论(0编辑  收藏  举报