#include <iostream>
#include <string>
using namespace std;

int
main() {
    int y, m, d;
    cin >> y >> m >> d;
    if (1989 <= y && y >= 2019) {
        if (y == 1989 && 1 <= m) {
            if (8 <= d) {
                cout << "YES" << endl;
                return 0;
            }
        } else if (y == 2019 && m <= 4) {
            if(d <= 30) {
                cout << "YES" << endl;
                return 0;
            }
        } else if (y != 2019 && y != 1989) {
            cout << "YES" << endl;
            return 0;
        }
    }
    cout << "NO" << endl;
    return 0;
}