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