#include <bits/stdc++.h>
using namespace std;
#define MAXN 100010

int main() {
	char a[7], b[7];
	cin >> a >> b;
	int pd1 = 0, pd2 = 0;
	for (int i = 0; i < 7; i++) {
		pd1 *= (int)a[i] - 64;
		pd2 *= (int)b[i] - 64;
	}
	if (pd1 % 47 == pd2 % 47) {
		cout << "GO";
		return 0;
	}
	cout << "STAY";
	return 0;
}