#include <bits/stdc++.h>

using namespace std;
using llong = long long;
using ldbl = long double;
using lpair = pair<llong, llong>;

#define ALL(x) x.begin(), x.end()

int main() {
  llong N;
  cin >> N;

  for (int i = 0; i < N; i++) {
    llong A, B;
    cin >> A >> B;

    llong ng = 0, ok = 40000;
    while (abs(ok - ng) > 1) {
      llong mid = (ok + ng) / 2;
      if (4 * A * B < (mid * mid - A - B) * (mid * mid - A - B)) {
        ok = mid;
      }
      else {
        ng = mid;
      }
    }

    cout << ok << endl;
  }

  return 0;
}