#include <bits/stdc++.h>
using namespace std;

#define rep(i, n) for (int i = 0; i < n; i++)
#define all(x) (x).begin(),(x).end()
const int mod = 1000000007;
const long long INF = 1LL << 60;

int main()
{
  int N;
  cin >> N;
  
  
  if(N/100==4){
    cout << "Yes" << endl;
    return 0;
  }
  if(N/100==5){
    cout << "Yes" << endl;
    return 0;
  }
  cout << "No" << endl;
}