#include<iostream>
using namespace std;

int abs( int a )
{
    return a > 0 ? a : -a;
}

int main()
{
    int n;

    cin >> n;

    int a[n];
    for( int i = 0; i < n; i++ )
        cin >> a[i];

    for( int i = 0; i < n - 1; i++ )
        for( int j = i + 1; j < n; j++ )
            if( abs( a[i] - a[j] ) % ( n - 1 ) == 0 )
            {
                cout << a[i] << " " << a[j] << endl;
                return 0;
            }

    return 0;
}
