#include <iostream>
using namespace std;
int main() {
int p, e, i, d;
cin >> p >> e >> i >> d;
p %= 23;
e %= 28;
i %= 33;
int k = d + 1;
while (true) {
if ((k % 23 == p) && (k % 28 == e) && (k % 33 == i)) {
cout << k - d << endl;
break;
}
k++;
}
return 0;
}
