#include<iostream>
using namespace std;
int main()
{
	int p,e,i,d,m=0;
	cin>>p>>e>>i>>d;
	while(!(p==-1&&e==-1&&i==-1&&d==-1))
	{	 m++;
	     int n;
	  for( n=1;n<=924;n++)
	  { 
		if  (  ((p+23*n)-e )%28==0  &&  ((p+23*n)-i )%33==0)
		{  
		     if(p+23*n<21252)
             cout<<"Case "<<m<<": the next triple peak occurs in "<<p+23*n-d<< " days."<<endl;
			 else 
             cout<<"Case "<<m<<": the next triple peak occurs in 21252 days."<<endl;
			 break;

		}
				
	  }
	  cin>>p>>e>>i>>d; 
	}
	return 0;
}


这是我的程序在自己环境里面运算和我用同学答案提交的程序计算出来的结果都是一样的，但是一直是WA,把我也给郁闷的.....只要自己想清楚了就行..