#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const ll MOD = 1000000007;
const long long INF = 1LL << 60;
#define rep(i,n) for(int i = 0; i < n; i++)
#define all(x) (x).begin(),(x).end()

int main() {
    int s;
    cin >> s;
    if(s/100 == 4 || s/100 == 5)
        cout << "Yes" << endl;
    else
        cout << "No" << endl;
}