#include <bits/stdc++.h>
//#include <atcoder/all>
using namespace std;
//using namespace atcoder;
//using mint = modint998244353;
//const int mod = 998244353;
//using mint = modint1000000007;
//const int mod = 1000000007;
//const int INF = 1e9;
//const long long LINF = 1e18;
#define rep(i, n) for (int i = 0; i < (n); ++i)
#define rep2(i,l,r)for(int i=(l);i<(r);++i)
#define rrep(i, n) for (int i = (n-1); i >= 0; --i)
#define rrep2(i,l,r)for(int i=(r-1);i>=(l);--i)
#define all(x) (x).begin(),(x).end()
#define allR(x) (x).rbegin(),(x).rend()
#define P pair<int,int>
template<typename A, typename B> inline bool chmax(A & a, const B & b) { if (a < b) { a = b; return true; } return false; }
template<typename A, typename B> inline bool chmin(A & a, const B & b) { if (a > b) { a = b; return true; } return false; }

int main() {
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	int t; cin >> t;
	while (t--) {
		long long v, x, out, in, q, r;
		cin >> v >> x >> out >> in >> q >> r;
		long long cycle = -q * out + r * in;
		long long mid = r * (in - out);
		if (cycle > 0) {
			cout << "Overflow" << endl;
		}
		else if (cycle < 0) {
			if (mid >= 0) {
				if (mid + x > v)cout << "Overflow" << endl;
				else cout << "Zero" << endl;
			}
			else {
				cout << "Zero" << endl;
			}
		}
		else {
			if (mid + x > v)cout << "Overflow" << endl;
			else cout << "Safe" << endl;
		}
	}
	return 0;
}