#pragma GCC optimize("Ofast")
#pragma GCC optimize(2)
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef string str;
typedef pair<ll,ll> pii;
#define F first
#define S second
#define pb push_back
#define all(x) (x).begin(),(x).end()
#define Ststone ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0)
const ll max_n=2e5+20,mod=1e9+7;
ll n;

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