#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
#define all(x) (x).begin(), (x).end()
#define MOD 1000000007

int main() {
    string y, m, d;
    cin >> y >> m >> d;
    if(m.size() == 1) {
        y += "0";
    }
    y += m;
    if(d.size() == 1) {
        y += "0";
    }
    y += d;
    if(y <= "20190430" && y >= "19890108") {
        cout << "Yes" << endl;
    } else {
        cout << "No" << endl;
    }
}