//Binary file 1
#include <iostream>
#include <fstream>
#include <cmath>

using namespace std;

int main()
{
    ofstream out("f.dat", ios::binary);
    int n,kv_i;
    cin >> n;
    for (int i = 1; i <= n; i++) {
        kv_i = i * i;
        out.write((char*)&kv_i, sizeof(kv_i));
    }
    out.close();
    ifstream in("f.dat", ios::binary);
    in.seekg(sizeof(int));
    while (in.peek() != EOF)
    {
        in.read((char*)&kv_i, sizeof(int));
        cout << kv_i << ' ';
        in.seekg(2, ios_base::cur);
    }
    in.close();
    return 0;
}