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

bool check(ll A, ll B, ll X){
    return 0LL < X*X - A - B && 4LL*A*B < (X*X - A - B)*(X*X - A - B); 
}

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

    vector<ll> A(N), B(N);
    rep(i, 0, N) cin >> A[i] >> B[i];

    rep(i, 0, N){
        ll r = 100000LL, l = 0LL;
        while(r != l + 1LL){
            ll mid = (r + l)/2LL;
            if(check(A[i], B[i], mid)) r = mid;
            else l = mid;
        }
        cout << r << endl;
    }
    return 0;
}