#include <iostream>
#include <fstream>

using namespace std;

ifstream fin("lacate.in");
ofstream fout("lacate.out");

int main()
{
    int n;
    fin >> n;
    fout << n - 1 << " 1\n";
    for (int i = 1; i < n; ++i)
        fout << i << '\n';
    fout << 1;
    return 0;
}