#include <iostream>
#include <algorithm>
using namespace std;
#define maxn 10010
int a[maxn];	

int main(){
	int n,k;
	cin>>n>>k;
	for (int i=1;i<=n;i++){ 
		cin>>a[i];
	}	
	sort(a+1,a+n+1);
	int x=unique(a+1,a+n+1)-a;
	if (k>x) cout<<"NO RESULT";
	else{ 
		cout<<a[k];
	}
	return 0;
}

求指出错误qwq