// #pragma GCC optimize("O3,unroll-loops")
#include <bits/stdc++.h>
// #include <x86intrin.h>
using namespace std;
#if __cplusplus >= 202002L
using namespace numbers;
#endif



int main(){
	cin.tie(0)->sync_with_stdio(0);
	cin.exceptions(ios::badbit | ios::failbit);
	auto __solve_tc = [&](auto __tc_num)->int{
		long long cap, init;
		int fin, fout, q, r;
		cin >> cap >> init >> fout >> fin >> q >> r;
		long long delta = 1LL * r * fin - 1LL * q * fout;
		if(init + 1LL * r * (fin - fout) > cap){
			cout << "Overflow\n";
		}
		else if(init + delta <= 0){
			cout << "Zero\n";
		}
		else if(delta > 0){
			cout << "Overflow\n";
		}
		else if(delta < 0){
			cout << "Zero\n";
		}
		else{
			cout << "Safe\n";
		}
		return 0;
	};
	int __tc_cnt;
	cin >> __tc_cnt;
	for(auto __tc_num = 0; __tc_num < __tc_cnt; ++ __tc_num){
		__solve_tc(__tc_num);
	}
	return 0;
}

/*
delta * t + init
r * (fin - fout)

*/