#include <iostream>
#include <cstdio>
using namespace std;

int main()
{
    int a[100];

    for (int i = 0; i < 20; i++)
    cin >> a[i];

    for (int i = 0; i < 10; i++)
    {
        int m = 0;
        m = a[i];
        a[i] = a[19-i];
        a[19-i] = m;
    }

    for (int i = 0; i < 20; i++)
    printf("N[%d] = %d\n", i, a[i]);

    return 0;
}