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

void solve(){
  ll A,B;
  cin>>A>>B;
  ll V=4*A*B;
  __int128_t l=1,ans=100'000;
  while(ans-l>1){
    __int128_t mid=(l+ans)/2;
    if((mid*mid-A-B)<0||(mid*mid-A-B)*(mid*mid-A-B)<=4*A*B)l=mid;
    else ans=mid;
  }
  ll ret=ans;
  cout<<ret<<'\n';
}

int main(){
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  int T;
  cin>>T;
  while(T--){
    solve();
  }
}