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a>=2*b要用long long,亲们!因为2*b可能超过int的范围,附AC代码#include <stdio.h>
int main()
{
	int a,b,t;
	while(scanf("%d%d",&a,&b)!=EOF)
	{
		if(a+b==0)break;
		if(a<b)
			a=a^b,b=a^b,a=a^b;
		t=0;
		while(a%b!=0)
		{
			if(a/b>=2)break;
			a=a-b;
			if(a<b)
			a=a^b,b=a^b,a=a^b;
			t=!t;
		}
		if(!t)
			printf("Stan wins\n");
		else
			printf("Ollie wins\n");
	}
	return 0;
}
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