#include<iostream>
#include<cstdio>

using namespace std;
#define N 21252
int main()
{
    int p, e, i, d, caseNo = 0;
    // -1 代表输入结束
    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); // 跳着取数，确保是p的倍数
        for (;(k - i) % 33;k+=28*23); // 跳着取数，确保是p和e的倍数
        cout << "Case" << caseNo << 
            ": the next triple peak occurs in " << (k - d) << " days " << endl;
    }
    return 0;
}