Codeforces Round #317 [AimFund Thanks-Round] (Div. 2)A Arrays

思路：水题

#include<bits\stdc++.h>
using namespace std;
const int maxn = 1e5+6;
int a[maxn];
int b[maxn];
int main()
{
int n1,n2;
scanf("%d%d",&n1,&n2);
int k,m;
scanf("%d%d",&k,&m);
for(int i = 1;i<=n1;i++)
scanf("%d",&a[i]);
for(int i = 1;i<=n2;i++)
scanf("%d",&b[i]);
sort(a+1,a+1+n1);
sort(b+1,b+1+n2);
if(a[k] < b[n2-m+1])
puts("YES");
else
puts("NO");
}


A. Arrays

time limit per test
2 seconds

memory limit per test
256 megabytes

input
standard input

output
standard output

You are given two arrays A and B consisting
of integers, sorted in non-decreasing order. Check whether it is possible to choose knumbers
in array A and choose m numbers
in array B so that any number chosen in the first array is strictly less than any number chosen in the second array.

Input

The first line contains two integers nA, nB (1 ≤ nA, nB ≤ 105),
separated by a space — the sizes of arrays A and B,
correspondingly.

The second line contains two integers k and m (1 ≤ k ≤ nA, 1 ≤ m ≤ nB),
separated by a space.

The third line contains nA numbers a1, a2, ... anA ( - 109 ≤ a1 ≤ a2 ≤ ... ≤ anA ≤ 109),
separated by spaces — elements of array A.

The fourth line contains nB integers b1, b2, ... bnB ( - 109 ≤ b1 ≤ b2 ≤ ... ≤ bnB ≤ 109),
separated by spaces — elements of array B.

Output

Print "YES" (without the quotes), if you can choose k numbers
in array A and m numbers
in array B so that any number chosen in arrayA was
strictly less than any number chosen in array B. Otherwise, print "NO"
(without the quotes).

Examples

input

3 3
2 1
1 2 3
3 4 5

output

YES

input

3 3
3 3
1 2 3
3 4 5

output

NO

input

5 2
3 1
1 1 1 1 1
2 2

output

YES

Note

In the first sample test you can, for example, choose numbers 1 and 2 from array A and number 3 from array B (1
< 3 and 2 < 3).

In the second sample test the only way to choose k elements in the first array and m elements
in the second one is to choose all numbers in both arrays, but then not all the numbers chosen in A will be less than all the numbers
chosen in B: 

.