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


int main() {
	int n;
	cin >> n; // 1 to 2e5
	
	queue<int> q;

	for(int i = 1; i <= n; i++) {
		q.push(i);
	}
	
	while(!q.empty()) {
		q.push(q.front());
		q.pop();
		cout << q.front() << ' ';
		q.pop();
	}
	cout << '\n';
	return 0;
}