#include "bits/stdc++.h"
using namespace std;
#define ll long long int

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    int y,m,d;
    ll a;
    cin >> y >> m >> d;
    a=(ll)y*10000+m*100+d;
    if (a>=19890108&&a<=20190430) cout << "Yes" << endl;
    else cout << "No" << endl;
    return 0;
}