#inlcude<iostream>
using namespace std;

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

}
	return 0;
}