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