#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<int,int> P;
#define REP(i,n) for(int i=0;i<int(n);i++)



int main(void){
	cin.tie(nullptr);  ios_base::sync_with_stdio(false);
	ll i,j;

	int T;
	cin >> T;
	while(T--){

		ll V,X,F0,F1,Q,R;
		cin >> V >> X >> F0 >> F1 >> Q >> R;




		ll x=R*F1-Q*F0;
		if(F1-F0>0){
			if(X+(F1-F0)*R>V){
				cout << "Overflow" << endl;
				continue;
			}

			if(x>0) cout << "Overflow" << endl;
			else if(x==0) cout << "Safe" << endl;
			else cout << "Zero" << endl;
		}

		else cout << "Zero" << endl;


	}


	return 0;

}