找到Stan的必败状态，[10,18]，[163,324]……[9^n*2^(n-1)+1,9^n*2^n]
分析:
0-9:stan
10-18:ollie
19-162:stan
163-324:ollie
规律:
9 = 9
18 =2*9
162 = 9*2*9
324 = 2*9*2*9
...
代码如下：
#include<iostream>
#include<cstdio>
using namespace std;
double n;
int main()
{
while(scanf("%lf",&n)!=EOF)
{
while(1)
{
if(n<=9){printf("Stan wins.\n");break;}
else if(n<=18){printf("Ollie wins.\n");break;}
n/=18;
}
}
return 0;
}