#include <iostream>
#include <cstdint>

using namespace std;

int main()
{
	cin.tie(nullptr);
	ios::sync_with_stdio(false);
	
	uint32_t X;
	cin >> X;

	constexpr uint32_t ans_of[11] = { UINT32_MAX, UINT32_MAX, 2, 5, 4, 15, 14, 25, 24, 35, 34 };
	cout << ans_of[X] << '\n';
	return 0;
}