#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (ll i = 0; i < (n); ++i)
#define rrep(i, n) for (ll i = n; i > 0; --i)
#define bitrep(i, n) for (ll i = 0; i < (1 << n); ++i)
#define all(a) (a).begin(), (a).end()
#define rall(a) (a).rbegin(), (a).rend()
#define yesNo(b) ((b) ? "Yes" : "No")
using ll = long long;
using ull = unsigned long long;
using ld = long double;
string alphabet = "abcdefghijklmnopqrstuvwxyz";
string ALPHABET = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
const double pi = 3.141592653589793;
int smallMOD = 998244353;
int bigMOD = 1000000007;

int main()
{
    int n;
    cin >> n;
    if (n == 2)
    {
        cout << 2 << endl;
    }
    else if (n == 3)
    {
        cout << 5 << endl;
    }
    else if (n == 4)
    {
        cout << 4 << endl;
    }
    else if (n == 5)
    {
        cout << 15 << endl;
    }
    else if (n == 6)
    {
        cout << 14 << endl;
    }
    else if (n == 7)
    {
        cout << 25 << endl;
    }
    else if (n == 8)
    {
        cout << 24 << endl;
    }
    else if (n == 9)
    {
        cout << 35 << endl;
    }
    else if (n == 10)
    {
        cout << 34 << endl;
    }
    return 0;
}