#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  int gl, bl, br, gr;
  cin >> gl >> gr >> bl >> br;
  if (br <= (gl + 1) * 2 && br >= gl - 1) {
    cout << "YES";
    return 0;
  }
  if (bl <= (gr + 1) * 2 && bl >= gr - 1) {
    cout << "YES";
    return 0;
  }
  cout << "NO";
}
