#include<iostream>#include<cstdio>usingnamespace std;#define N 21252intmain(){int p,e,i,d,caseNo =0;while( cin >> p >> e >> i >> d && p!=-1){++ caseNo;int k;for(k = d+1;(k-p)%23;++k);for(;(k-e)%28; k+=23);for(;(k-i)%33; k+=23*28);
cout <<"Case"<< caseNo <<": the next tirple peak occurs in "<< k-d <<"days."<< endl;}return0;}