#include <iostream>

int main() {
    int N;
    std::cin >> N;

    // Print sequence from 1 to N
    for (int i = 1; i <= N; ++i) {
        std::cout << i << ' ';
    }
    std::cout << std::endl;

    // Print sequence from N to 1
    for (int i = N; i >= 1; --i) {
        std::cout << i << ' ';
    }
    std::cout << std::endl;

    return 0;
}