#include <bits/stdc++.h>   using namespace std;   int main() {     int k, m, n1, n2;     cin >> n1 >> n2 >> k >> m;     vector<int> a(n1);     for (int i = 0; i < a.size(); ++i) cin >> a[i];     vector<int> b(n2);     for (int i = 0; i < b.size(); ++i) cin >> b[i];     if (a[k - 1] < b[n2 - m])       cout <<  YES n ;     else       cout <<  NO n ;     return 0;   }   