//tangguowu

#include <iostream>
using namespace std;

int main()
{
	int p,e,i,d,num=0,j;
	while(cin>>p>>e>>i>>d&&(p!=-1||e!=-1||i!=-1||d!=-1))
	{
		num++;
		for(j=d+1;j>=0;j++)
			if((j+d-p)%23==0 && (j+d-e)%28==0 && (j+d-i)%33==0 )
			{
				cout<<"Case "<<num<<": the next triple peak occurs in "<<j<<" days."<<endl;
				break;
			}
	}
	return 0;
}