#include<bits/stdc++.h>
using namespace std;
int a[30003]={};
int main(){
	int n,k;
	cin>>n>>k;
	int b;
	for(int i=0;i<n;++i){
		cin>>b;
		a[b]++;
	}
	int cut=1;
	for(int i=1;i<=n;++i){
		if(cut==k){
			cout<<i;
			exit(0);
		}
		if(a[i]!=0){
			cut++;
		}
	}
	cout<<"NO RESULT";
	return 0;
}