#include<iostream.h>
int main()
{
	int p,e,i,d,n,N,ca=0;
	cin>>p>>e>>i>>d;
	while(p!=-1||e!=-1||i!=-1||d!=-1)
	{
		ca++;
		n=0;
		while((n++)<=644)
		{	
			N=33*n-(d-i);
			if((N+(d-e))%28==0&&(N+(d-p))%23==0)break;
		}
		if(N>21252)break;
		cout<<"Case "<<ca<<": the next triple peak occurs in "<<N<<" days."<<endl;
		cin>>p>>e>>i>>d;
	}
	return 0;
}

• Re:望高手指点 (423) Trojan 2006-05-26 21:26:37