#include <bits/stdc++.h>
#include<iostream>
#include<map>
#include<vector>
#include <algorithm>
#include<math.h>
#include <iomanip>
#include<set>
#include <numeric>
#include<string>
using ll = long long;
using namespace std;

int main()
{
    ll n, s;
    cin >> n >> s;
    cout << ((25 > s || s/n >= 29) ? "No" : "Yes") << endl;
}