#include <bits/stdc++.h>
#define rep(i, n) for (ll i = 0; i < n; ++i)
typedef long long ll;
using namespace std;
const int INF = 1e9;

int main() {
    int y, m, d;
    cin >> y >> m >> d;

    bool ans = false;
    if (y > 1989 && y < 2019)
        ans = true;
    else if (y == 1989) {
        if (m != 1 || d >= 8)
            ans = true;
    } else if (y == 2019) {
        if (m <= 4)
            ans = true;
    }

    ans ? cout << "Yes" : cout << "No";
    cout << endl;

    return 0;
}