#include <bits/stdc++.h>
using namespace std;
#include <atcoder/all>
using namespace atcoder;
#define rep(i, n) for(int i=0;i<(n);++i)
#define rep1(i, n) for(int i=1;i<=(n);i++)
#define ll long long
using mint = modint998244353;
using P = pair<ll,ll>;
using lb = long double;
using T = tuple<ll, ll, ll>;
#ifdef LOCAL
#  include <debug_print.hpp>
#  define dbg(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__)
#else
#  define dbg(...) (static_cast<void>(0))
#endif


int main()
{
    int n;
    cin >> n;
    vector<ll> a(n), b(n);
    rep(i,n) cin >> a[i] >> b[i];
    rep(i,n){
        ll low = 0;
        ll high = 7e4;
        while(high-low>1){
            ll mid = (high+low)/2;
            ll val = (mid*mid-a[i]-b[i]);
            __uint128_t v = val*val;
            if(v>4*a[i]*b[i]){
                high = mid;
            }
            else{
                low = mid;
            }
        }
        cout << high << endl;
    }
    return 0;
}