#include <bits/stdc++.h>

using namespace std;
void fast_io() {
    ios::sync_with_stdio(false);
    std::cin.tie(nullptr);
}

void solve() {
    long long v, x, fo, fi, q, r;
    cin >> v >> x >> fo >> fi >> q >> r;
    long long ma = max(x, x + r * (fi - fo));
    long long la = x + r * fi - q * fo;
    if (ma > v) {
        cout << "Overflow" << endl;
    } else if (la <= 0) {
        cout << "Zero" << endl;
    } else if (la > x) {
        cout << "Overflow" << endl;
    } else if (la == x) {
        cout << "Safe" << endl;
    } else {
        cout << "Zero" << endl;
    }
}
int main() {
    fast_io();
    int t;
    cin >> t;
    for (; t--;) {
        solve();
    }
}