#include <bits/stdc++.h>
using namespace std;
using ll = long long;
string keys[] = {"Overflow", "Zero", "Safe"};
void solve() {
	ll v, x, fo, fi, q, r;
	cin >> v >>x >> fo >> fi >> q >> r;
	if (fi < fo) {
		cout << keys[1] << endl;
		return;
	}
	ll y = x + (fi - fo) * r;
	ll z = y - (fo * (q - r));
	if (y > v) {
		cout << keys[0] << endl;
		return;
	}
	cout << (z < x ? keys[1] : (z > x ? keys[0] : keys[2])) << endl;
}
int main () {
	int T;
	cin >> T;
	while (T--) {
		solve();
	}
}