#include <bits/stdc++.h>
using namespace std;

#define int long long

vector<int> low = {1989, 1, 8};
vector<int> high = {2019, 4, 30};
vector<int> now(3);

signed main() {
  cin >> now[0] >> now[1] >> now[2];

  puts((low <= now && now <= high) ? "Yes" : "No");

  return 0;
}