hdu 1570

#include<stdio.h>
int a[11];
int main()
{
    int i,j,k,n,m,t;
    char s[2];
    a[0]=1;
    a[1]=1;
    for(i=2;i<11;i++)
        a[i]=a[i-1]*i;
        scanf("%d",&t);
    while(t--)
    {
        scanf("%s%d%d",s,&n,&m);
        if(s[0]=='A')
            printf("%d
",a[n]/a[n-m]);
        else
            printf("%d
",a[n]/a[m]/a[n-m]);
    }
    return 0;

}