#include <bits/stdc++.h> 
using namespace std;
using ll =long long;
#define all(v) v.begin(),v.end()
 #define rep(i,a,b) for(int i=a;i<b;i++)
#define rrep(i,a,b) for(int i=a;i>=b;i--)

ll INF=2e18;

void solve() {
ll V,X;cin>>V>>X;
vector<ll> vec(2);
cin>>vec[0]>>vec[1];
ll Q,R;cin>>Q>>R;

ll a=R*(vec[1]-vec[0])-(Q-R)*vec[0];
if(a>0) {
  cout<<"Overflow"<<endl;
}
else if(a==0) {
  if(X+(vec[1]-vec[0])*R>V) cout<<"Overflow"<<endl;
  else cout<<"Safe"<<endl;
}
else {
  if(X+(vec[1]-vec[0])*R>V) cout<<"Overflow"<<endl;
  else cout<<"Zero"<<endl;
}


}

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  ll t;cin>>t;
  for(ll i=0;i<t;i++) {
    solve();
  }

}