#include <iostream>
#include <vector>
#include <map>
#include <set>
#include <queue>
#include <string>
#include <iomanip>
#include <algorithm>
#include <cmath>
#include <stdio.h>
using namespace std;
#define int long long
int MOD = 1000000007;
signed main() {
	cin.tie(0);
	ios::sync_with_stdio(false);
	int Y, M, D;
	cin >> Y >> M >> D;
	string res = "No";
	if (Y < 2019) {
		res = "Yes";
	}
	else if (Y == 2019) {
		if (M <= 4)res = "Yes";
	}
	cout << res << endl;
}