郁闷顺便贴下代码：
#include"stdio.h"
#define m 4
int main()
{
	int i,j,k,a[m],b,t;
	k=1;
	while(scanf("%d%d%d%d",&a[0],&a[1],&a[2],&a[3]),a[0]!=EOF)
	{
		for(i=1;i<=21252;i++)
		{
			if((i-a[0])%23==0&&(i-a[1])%28==0&&(i-a[2])%33==0)break;
		}
		if(i<=a[3])i=i+21252;
		t=i-a[3];
		if(t>21252)t=t-21252;
		printf("Case %d: the next triple peak occurs in %d days.\n",k,t);
		k++;
	}
	return 0;
}