#include <iostream>
using namespace std;
int main() {
    int y, m, d, ans = 0;
    cin >> y >> m >> d;
    if ((1989 < y) && (y < 2019)) {ans = 1;}
    else if ((y == 1989) && (1 < m)) {ans = 1;}
    else if ((y == 1989) && (m == 1) && (d >= 8)) {ans = 1;}
    else if ((y == 2019) && (m < 5)) {ans = 1;}
    if (ans == 1) {cout << "Yes";}
    else {cout << "No";}
}