#include<bits/stdc++.h>

using namespace std;

#define ll long long
#define all(a) a.begin(),a.end()
#define endl '\n'
 

void solve()
{
    ll a,b;cin>>a>>b;
    ll ct=0;

    cout<<4<<endl;
    


}

int main()
{
    ios::sync_with_stdio(0); cin.tie(0);
    ll t;cin>>t;
    while(t--)
    {
      solve();
    }    
}