#include <bits/stdc++.h>   using namespace std;   const int N = 110;   int main() {     cin.tie(0);     cout.tie(0);     ios::sync_with_stdio(false);     int al, ar, bl, br;     cin >> al >> ar >> bl >> br;     if ((al * 2 + 3 > br && br >= al - 1) || (ar * 2 + 3 > bl && bl >= ar - 1))       cout <<  YES  << endl;     else       cout <<  NO  << endl;     return 0;   }   