#include<bits/stdc++.h>
#define mp make_pair
using namespace std;
using ll = long long;


int main() {
	int h, m;
	cin >> h >> m;
	int t = 60 * h + m;
	if (t <= 449) cout << "Yes";
	else if (t >= 510)cout << "No";
	else cout << "Late";
}