#include <iostream>
using namespace std;

int main(){
    int p,e,i,d,pe,temp,res;
    int cnt = 1;
    while(1){
        cin>>p>>e>>i>>d;
        if(p==-1&&e==-1&&i==-1&&d==-1){
            return 0;
        }
        p=p%23; e=e%28; i=i%33; 
        temp=1;
        while(1){
            while((e-p+temp*5)%23!=0)
                temp++;
            pe = e+28*temp;
            if((pe-i)%33!=0){
                temp++;
                continue;
            }
            else break;
        }
        pe-d>0? res=pe-d:res=pe-d+21252;
        cout<<"Case "<<cnt<<": the next triple peak occurs in "<<res<<" days."<<endl;
        cnt++;
    }
    return 0;
}