#include<iostream>
using namespace std;
int main()
{
    int p,q,r,i=0,j,a,b,c,d,S;
    while(cin>>p>>q>>r>>d)
    {
        if(p==-1&&q==-1&&r==-1&&d==-1)
        break;
        i++;
        if(p>=23)
        p=p%23;
        if(q>=28)
        q=q%28;
        if(r>=33)
        r=r%33;
        for(j=0;j<=644;j++)
        {
            S=j*33+r;
            if((S-p)%23==0&&(S-q)%28==0&&S>d)
            break;
        }               
        cout<<"Case "<<i<<": the next triple peak occurs in "
            <<S-d<<" days."<<endl;
    }
    return 0;
}