codeforces #317 div2 A. Arrays (水)

 1/*************************************************************************
 2	> File Name: code/cf/#317/A.cpp
 3	> Author: 111qqz
 4	> Email: rkz2013@126.com 
 5	> Created Time: 2015年08月23日 星期日 00时29分47秒
 6 ************************************************************************/
 7
 8#include<iostream>
 9#include<iomanip>
10#include<cstdio>
11#include<algorithm>
12#include<cmath>
13#include<cstring>
14#include<string>
15#include<map>
16#include<set>
17#include<queue>
18#include<vector>
19#include<stack>
20#include<cctype>
21#define y1 hust111qqz
22#define yn hez111qqz
23#define j1 cute111qqz
24#define ms(a,x) memset(a,x,sizeof(a))
25#define lr dying111qqz
26using namespace std;
27#define For(i, n) for (int i=0;i<int(n);++i)  
28typedef long long LL;
29typedef double DB;
30const int inf = 0x3f3f3f3f;
31const int N=1E5+7;
32int na,nb,k,m;
33int a[N],b[N];
34int main()
35{
36  #ifndef  ONLINE_JUDGE 
37    freopen("in.txt","r",stdin); 
38  #endif
39    cin>>na>>nb;
40    cin>>k>>m;
41    for ( int i = 1 ; i <= na ; i++){
42	scanf("%d",&a[i]);
43    }
44    for ( int i  = 1 ; i<= nb ; i++){
45	scanf("%d",&b[i]);
46    }
47    if (a[k]<b[nb-m+1]){
48	puts("YES");
49    }
50    else
51    {
52	puts("NO");
53    }
54
55
56 #ifndef ONLINE_JUDGE  
57  fclose(stdin);
58  #endif
59	return 0;
60}