#include <bits/stdc++.h>
using namespace std;
/*/
#include <atcoder/all>
using namespace atcoder;
//*/
#define rep(i,n) for(int i=0;i<n;i++)
#define Rep(i,a,b) for(int i=a;i<b;i++)
#define ALL(x) (x).begin(),(x).end()
#define dbgv(x); for(auto now : x) cout << now << " "; cout << endl;
//using P = pair<int,int>;
using ll = long long;
using ull = unsigned long long;
//*/
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<ll> vll;
typedef vector<int> vint;

void solve(){
  ll v,x,f1,f2,q,r; cin >> v >> x >> f1 >> f2 >> q >> r;
  ll x1 = x;
  x += (f2-f1)*r;
  if(x > v){
    cout << "Overflow" << endl;
    return;
  }
  x -= f1*(q-r);
  if(x > x1){
    cout << "Overflow" << endl;
  }else if(x == x1){
    cout << "Safe" << endl;
  }else{
    cout << "Zero" << endl;
  }
}

int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  int t; cin >> t;
  rep(i,t) solve();
}