#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
#define rep(i, n) for(int i=0;i<(n);++i)
#define rep1(i, n) for(int i=1;i<=(n);i++)
#define ll long long
using mint = modint998244353;
using P = pair<ll,ll>;
using lb = long double;
using T = tuple<ll, ll, ll>;
#ifdef LOCAL
#  include <debug_print.hpp>
#  define dbg(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__)
#else
#  define dbg(...) (static_cast<void>(0))
#endif

int main()
{
    int t;
    cin >> t;
    while(t--){
        ll v, x, f, F, q, r;
        cin >> v >> x >> f >> F >> q >> r;
        ll add = -f*q+F*r;
        ll prev = (F-f)*r;
        if(prev+x>v || add>0){
            cout << "Overflow" << endl;
        }
        else if(add<0){
            cout << "Zero" << endl;
        }
        else{
            cout << "Safe" << endl;
        }
    }
    return 0;
}