#include <bits/stdc++.h>

using namespace std;

int main() {
    vector<int> vt(3);
    for (int i = 0; i < 3; ++i) {
        cin >> vt[i];
    }
    vector<int> low = {1989, 1, 8}, high = {2019, 4, 30};
    if (vt >= low and vt <= high) {
        cout << "Yes" << endl;
    } else {
        cout << "No" << endl;
    }
    return 0;
}