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

int main() {
  int N, S;
  cin >> N >> S;
  if (29 * N < S) {
      cout << "No" << endl;
  }
  else if (S <= 24) {
      cout << "No" << endl;
  }
  else {
      cout << "Yes" << endl;
  }
}