#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using P = pair<ll, ll>;
#define rep(i, a, b) for(ll i = a; i < b; ++i)
#define rrep(i, a, b) for(ll i = a; i >= b; --i)
constexpr ll inf = 4e18;
struct SetupIO {
    SetupIO() {
        ios::sync_with_stdio(0);
        cin.tie(0);
        cout << fixed << setprecision(30);
    }
} setup_io;
int main(void) {
    int T;
    cin >> T;
    while(T--) {
        ll v, x, fo, fi, q, r;
        cin >> v >> x >> fo >> fi >> q >> r;
        ll cur = x;
        cur += r * (fi - fo);
        if(cur <= 0) {
            cout << "Zero" << '\n';
        } else if(cur > v) {
            cout << "Overflow" << '\n';
        } else {
            cur -= (q - r) * fo;
            if(cur == x) {
                cout << "Safe" << '\n';
            } else if(cur > x) {
                cout << "Overflow" << '\n';
            } else {
                cout << "Zero" << '\n';
            }
        }
    }
}