#include <iostream>
#include <boost/multiprecision/cpp_int.hpp>

using namespace std;
using ll = long long;
using namespace boost::multiprecision;

ll solve (int A, int B) {
    auto f = [&](ll X) -> bool {
        cpp_int a = A, b = B, x = X;

        return 0 < x*x - a - b && 4 * a * b < (x*x - (a+b)) * (x*x - (a+b));
    };

    ll ok = 65000, ng = 0;
    while (1 < abs(ok-ng)) {
        ll mid = (ok + ng) / 2;
        if (f(mid)) {
            ok = mid;
        }
        else {
            ng = mid;
        }
    }

    return ok;
}

int main () {
    int N; cin >> N;
    // 二回2乗してやれば二分探索できそうな形になる(った)
    // -> アッ、二乗したときに符号関連の情報が死んでるっぽい

    while (N--) {
        int A, B; cin >> A >> B;

        auto ans = solve(A, B);
        cout << ans << "\n";
    }
}