Codeforces 1613B - Absent Remainder Solution

  ///La ilaha illellahu muhammadur rasulullah

///******Bismillahir-Rahmanir-Rahim******///

///Abul Hasnat  Tonmoy

///Department of CSE,23rd batch

///Islamic University,Bangladesh

#include <bits/stdc++.h>

using namespace std;

int main()

{

    int t,n,i,s;

    cin>>t;

    while(t--)

    {

        cin>>n;

        int a[n+9];

        for(i=0; i<n; i++)

            cin>>a[i];

        sort(a,a+n);

        for(i=1; i<n; i+=2)

        cout<<a[i]<<" "<<a[0]<<endl;

    }

}