#include <bits/stdc++.h>
using namespace std;

typedef unsigned long long ull;

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);

	int total = 0;

	while (!cin.eof()) {
		int ax, ay, bx, by, px, py;
		cin.ignore(12);
		cin >> ax;
		cin.ignore(4);
		cin >> ay;
		cin.ignore(13);
		cin >> bx;
		cin.ignore(4);
		cin >> by;
		cin.ignore(10);
		cin >> px;
		cin.ignore(4);
		cin >> py;
		cin.ignore(2);

		int smallest = -1;
		for (int a = 0; a <= 100; a++) {
			for (int b = 0; b <= 100; b++) {
				if (ax * a + bx * b == px && ay * a + by * b == py) {
					int n = a * 3 + b;
					if (smallest == -1 || n < smallest) {
						smallest = n;
					}
				}
			}
		}
		if (smallest != -1) {
			total += smallest;
		}
	}

	cout << total << '\n';
}