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AC代码#include<cstdio> #include<iostream> int check(int a,int b) { if(a<b) { int t=a;a=b;b=t;} if(b==0) return 0; if(a/b>=2) return 1; if(check(b,a%b)) return 0; return 1; } int main() { int a,b,i; while(scanf("%d%d",&a,&b)&&(a||b)){ if(check(a,b)) printf("Stan wins\n"); else printf("Ollie wins\n"); } } 这里说一下为什么a>=2*b当前选手一定赢。举一个例子就知道了。 27 5 不管怎么操作都会得到状态2 5,如果2 5是胜态的话,那么先手就可以选择到7 5,下一个选手必然要选2 5,假如2 5是负态的话,先手就可以选择到2 5. Followed by: Post your reply here: |
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