#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < (n); i++)
using namespace std;
typedef long long ll;

int main(){
    cin.tie(0);
    ios::sync_with_stdio(0);
    
    ll N,S; cin >> N >> S;
    cout << (25 <= S && S <= (30 - 1) * N ? "Yes" : "No") << endl;
}