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

#define ll long long
#define pll pair<ll,ll>
#define pii pair<int,int>
#define fs first
#define sc second
#define ld long double



const ld sq = sqrt(1e9+10);
const ld eps = 1e-8;

void solve(){
	ll a,b;
	cin>>a>>b;
	ld l = 0,r = sq;
	ld sa,sb;
	for(int i = 0;i<60;i++){
		ld mid = (l+r)/2;
		if(mid*mid>=a)r = mid;
		else l = mid;
	}
	sa = l;
	l = 0,r = sq;
	for(int i = 0;i<60;i++){
		ld mid = (l+r)/2;
		if(mid*mid>=b)r = mid;
		else l = mid;
	}
	sb = l;
	ld sum = ceil(sa+sb+eps);
	cout<<(ll)round(sum)<<'\n';
	return;
}
int main(){
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	int t;cin>>t;
	while(t--)solve();
}