#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
const int INF = 1e9;
const ll LINF = 1e18;
int main(){
    int s;
    cin >> s;
    if(s/100 == 4 || s/100 == 5) cout << "Yes" << endl;
    else cout << "No" << endl;

    return 0;
}