#include <bits/stdc++.h>
using namespace std;

#define rep(i, a, b) for (int i = (int)(a); (i) < (int)(b); (i)++)
#define rrep(i, a, b) for (int i = (int)(b) - 1; (i) >= (int)(a); (i)--)
#define all(v) v.begin(), v.end()

typedef long long ll;
template <class T> using V = vector<T>;
template <class T> using VV = vector<V<T>>;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    constexpr char endl = '\n';

    int n;
    cin >> n;
    while (n--) {
        ll a,b;
        cin >> a >> b;
        ll x = sqrt(a) + sqrt(b);
        x--;
        while (1) {
            ll num1 = 4LL * a * b;
            ll num2 = x * x - a - b;
            if (num2 * num2 > num1) {
                cout << x << endl;
                break;
            }
            x++;
        }
    }
    return 0;
}