#include<iostream>
using namespace std;
int main(void) {
int i, a, b, c, d, f[4];
for (i = 0; i < 4; i++) cin >> f[i];
a = f[0] + f[1] + f[2] + f[3];
a = a / f[0];
b = f[0] + f[2] + f[3];
b = b / a;
c = (b * f[1] + a) / f[2];
d = f[(b / c) % 4];
if (f[(a + b + c + d) % 4] > f[2])
cout << a + b << endl;
else
cout << c + d << endl;
return 0;
} 输入：9 19 29 39
输出：______1________
