#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i, s, e) for (int i = (int)(s); i < (int)(e); ++i)

int main() {
	cin.tie(nullptr);
	ios_base::sync_with_stdio(false);
	
	int N;
	cin >> N;
	rep(i, 0, N) {
		ll A, B;
		cin >> A >> B;
		
		ll ok = 63300, ng = 0;
		while (ok - ng > 1) {
			ll mid = (ok + ng) / 2;
			if (4*A*B < (mid*mid - A - B)*(mid*mid - A - B)) ok = mid;
			else ng = mid;
		}
		cout << ok << '\n';
	}
}