#include "bits/stdc++.h" using namespace std; typedef long long ll; typedef pair pii; typedef pair pll; const int INF = 1e9; const ll LINF = 1e18; inline ll gcd(ll a, ll b) { return b ? gcd(b, a%b) : a; } inline ll lcm(ll a, ll b) { return a / gcd(a, b)*b; } template ostream& operator << (ostream& out,const pair& o){ out << "(" << o.first << "," << o.second << ")"; return out; } template ostream& operator << (ostream& out,const vector& V){ for(int i = 0; i < V.size(); i++){ out << V[i]; if(i!=V.size()-1) out << " ";} return out; } template ostream& operator << (ostream& out,const vector >& Mat){ for(int i = 0; i < Mat.size(); i++) { if(i != 0) out << endl; out << Mat[i];} return out; } template ostream& operator << (ostream& out,const map& mp){ out << "{ "; for(auto it = mp.begin(); it != mp.end(); it++){ out << it->first << ":" << it->second; if(mp.size()-1 != distance(mp.begin(),it)) out << ", "; } out << " }"; return out; } templatevector make_v(size_t a){return vector(a);} templateauto make_v(size_t a,Ts... ts){return vector(ts...))>(a,make_v(ts...));} template typename enable_if::value==0>::type fill_v(T &t,const V &v){t=v;} template typename enable_if::value!=0>::type fill_v(T &t,const V &v){for(auto &e:t) fill_v(e,v);} /* 問題文============================================================ ================================================================= 解説============================================================= ================================================================ */ using ld = long double; ld eps = 1e-22; ld pi = acos(-1.0); ld calc_L(int n){ ld L = 0.0; for(int i = 1;;i++){ ld add_val = 1.0; for(int n_ = 0; n_ < n;n_++){ add_val /= i; if(add_val < eps) break; } if(add_val < eps) break; L += add_val; } return L; } template Type solve(Type res = Type()){ int x; cin >> x; if(x >= 21) return 0; vector ans_list = { 0, 0, 999999, 355065, 153009, 70685, 33758, 16414, 8065, 3988, 1979, 985, 491, 245, 122, 61, 30, 15, 7, 3, 1}; res = ans_list[x]; return res; } int main(void) { cin.tie(0); ios::sync_with_stdio(false); //solve(0); cout << fixed << setprecision(12) << solve() << endl; return 0; }