#include <cstdio>
typedef long long ll;
const ll DIVIDE = 1000000000000;
using namespace std;

ll extradfs(ll i);

int main()
{
    ll n, ans;
    
    scanf("%lld", &n);
    
    ans = extradfs(n);
    
    printf("%lld\n", ans);
    
    return 0;
}

ll extradfs(ll i) {
    if (i == 0) { return 1; }
    ll l = extradfs(i - 1);
    ll ans = 0;
    for (ll t = 0; t < i; ++t) {
        ans = ans + l;
        ll m = ans / DIVIDE;
        m *= DIVIDE;
        ans -= m;
    }
    return ans;
}