#include <bits/stdc++.h>
using namespace std;
using ll = unsigned long long;
using P = pair<ll,ll>;
#define fix(x) fixed << setprecision(x)
#define asc(x) x, vector<x>, greater<x>
#define rep(i, n) for(ll i = 0; i < n; i++)
#define all(x) (x).begin(),(x).end()
template<class T>bool chmin(T&a, const T&b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool chmax(T&a, const T&b){if(a<b){a=b;return 1;}return 0;}
constexpr ll INFLL = (1LL << 62), MOD = 998244353;
constexpr int INF = (1 << 30);

int main(){
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    int n;
    cin >> n;
    rep(i,n){
        ll a,b;
        cin >> a >> b;
        ll ng = 0, ok = 64000;
        while(ok-ng>1){
            ll md = (ok+ng)/2;
            if((md*md-a-b)<0) ng = md;
            else if(4*a*b<(md*md-a-b)*(md*md-a-b)) ok = md;
            else ng = md;
        }
        cout << ok << '\n';
    }
    return 0;
}