#include <bits/stdc++.h>




namespace zawa {

using i16 = std::int16_t;
using i32 = std::int32_t;
using i64 = std::int64_t;
using i128 = __int128_t;

using u8 = std::uint8_t;
using u16 = std::uint16_t;
using u32 = std::uint32_t;
using u64 = std::uint64_t;

using usize = std::size_t;

} // namespace zawa


namespace zawa {

void SetFastIO() {
    std::cin.tie(nullptr)->sync_with_stdio(false);
}

void SetPrecision(u32 dig) {
    std::cout << std::fixed << std::setprecision(dig);
}

} // namespace zawa
using namespace zawa;

void solve() {
    long long v, x, fo, fi, q, r; std::cin >> v >> x >> fo >> fi >> q >> r;
    long long out{fo * q};
    long long in{fi * r};
    long long init{fi * r - fo * r};
    if (x + init > v) {
        std::cout << "Overflow" << '\n';
    }
    else if (in == out) {
        std::cout << "Safe" << '\n';
    }
    else if (in > out) {
        std::cout << "Overflow" << '\n';
    }
    else {
        std::cout << "Zero" << '\n';
    }
}

int main() {
    SetFastIO();

    int t; std::cin >> t;
    for (int _{} ; _ < t ; _++) {
        solve();
    }
}