> 我自己测了好多都是正确的，各位高手帮忙看看啊！先谢谢了。
> 
> #include<stdio.h>
> int main()
> {
> 	int p,e,i,d,count;
> 	count=1;
> 	while(1)
> 	{
> 		scanf("%d%d%d%d",&p,&e,&i,&d);
> 		if(p==-1)
> 			break;
> 		p=p%23;
> 		e=e%28;
> 		i=i%33;
> 		while(1)
> 		{
> 		  if(p<=e&&p<=i)
> 			p=p+23;
> 		  else
> 			if(e<=p&&e<=i)
> 		    	e=e+28;
> 		    	else
> 			    	i=i+33;
> 	    	if(p==e&&e==i&&p>d)
> 			{
> 		        printf("Case %d: the next triple peak occurs in %d days.\n",count,p-d);
> 		        count++;
> 		        break;
> 			}
> 		}
> 	}
> 	return 0;
> }