#include <bits/stdc++.h>
#include <atcoder/modint>
#define rep(i,n) for(int i = 0;i<n;i++)
using namespace std;
using namespace atcoder;
using mint = modint998244353;
typedef long long ll;
#define yesif(x) cout << ((x) ? "Yes": "No") << endl 

int main() {
    ll n, s; cin >> n >> s;
    yesif(s >= 25 and s/n<=30); 
    return 0;
}