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

using ll = long long;

int main() {
    int Q;
    cin >> Q;
    while(Q--) {
        ll A, B;
        cin >> A >> B;
        ll P(max((ll)(sqrt(4LL*A*B)-30LL), 0LL));
        while(!(4*A*B < P * P)) {
            P++;
        }
        ll X(max((ll)(sqrt(P+A+B)-30LL), 0LL));
        while((X * X - A - B) < 0) X++;
        while(!(4*A*B < (X * X - A - B) * (X * X - A - B))) {
            X++;
        }
        cout << X << endl;
    }
    return 0;
}