//long double:[1(+-),11(e),52],2^52=4.5e15
//include{{{
#include <bits/stdc++.h> 
#include <atcoder/all>
#include <boost/multiprecision/cpp_int.hpp>
namespace mp=boost::multiprecision;
using namespace std;
//}}}
//MOD1=1e9+7 MOD2=998244353{{{
#define INF LONG_MAX
#define MOD1 1000000007
#define MOD2 998244353
#define rng(a) a.begin(),a.end()
#define rrng(a) a.end(),a.begin()
#define endl "\n"
using ll=long long int;
#define int ll
//}}}
//main{{{
void main_();
signed main(){
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    main_();
}
//}}}

void main_(){
    int N,S;
    cin>>N>>S;
    if(25<=S&&S<N*30){
        cout<<"Yes"<<endl;
    }
    else{
        cout<<"No"<<endl;
    }
}