/*
 * Author: nskybytskyi
 * Time:   2022-01-07 14:20:00
 */

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

int main() {
  cin.tie(0)->sync_with_stdio(0);

  int n, s;
  cin >> n >> s;

  if (s > 30ll * n || s < 25ll * n) {
    cout << "No\n";
  } else {
    cout << "Yes\n";
  }

  return 0;
}