HDU 2537 8球胜负

http://acm.hdu.edu.cn/showproblem.php?pid=2537

模拟

#include <stdio.h>
char a[100];
int n;
int gao()
{
    int r,y,i;
    r=y=7;
    for(i=0;i<n;i++)
    {
        if(a[i]=='R')r--;
        if(a[i]=='Y')y--;
        if(a[i]=='B'&&r==0)return 1;
        if(a[i]=='B'&&r!=0)return 0;
        if(a[i]=='L'&&y==0)return 0;
        if(a[i]=='L'&&y!=0)return 1;
    }
}
int main()
{
    while(scanf("%d%*c",&n),n)
    {
        gets(a);
        puts(gao()?"Red":"Yellow");
    }
    return 0;
}