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

template<typename T> T MUL(T a, T b){
    T res;
    return __builtin_mul_overflow(a, b, &res)? std::numeric_limits<T>::max() : res;
}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    int T;
    cin >> T;
    while(T--){
        ll a, b;
        cin >> a >> b;
        ll ng = 0, ok = 1 << 16, mid;
        while(ng + 1 < ok){
            mid = (ng + ok) / 2;
            ll r = max(0ll, mid * mid - a - b);
            if(4 * a * b < MUL(r, r)) ok = mid;
            else ng = mid;
        }
        cout << ok << '\n';
    }
}