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

using ll = long long;
using Graph = vector<vector<int> >;

#define rep(i, a, b) for(int i = a; i < b; i++)
#define rrep(i, a, b) for(int i = a; i >= b; i--)
#define fore(i, a) for(auto &i:a)
#define all(x) (x).begin(),(x).end()

const int INFI = 1 << 30;
const ll INFL = 1LL << 60;

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);

    ll n, s; cin >> n >> s;
    bool ans = true;
    if (29 * n < s) ans = false;
    if (s < 25) ans = false;

    if (ans) cout << "Yes" << "\n";
    else cout << "No" << "\n";
}