DSTROY

#include "bits/stdc++.h"
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

typedef long long ll;
using namespace __gnu_pbds;
using namespace std;

#define pb push_back
//#define mp make_pair
#define ff first
#define ss second
#define len(v) ((int)v.size())
#define all(v) v.begin(), v.end()
#define oset tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
ll mod=998244353;
void io(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    #ifndef ONLINE_JUDGE
        freopen("input_6.txt","r",stdin);
        freopen("output_6.txt","w",stdout);
    #endif
}

const int N = 1e6 + 5;
long long a[N];
ll summ;
int main()
{
	io();
	int n, k;
	cin >> n >> k;
	for(int i = 0; i<n; i++) {
		cin >> a[i];
		summ+=a[i];
	}

	long long l = 0, r = 1e18, m;
	while( l+1 < r) {

		long long sum = 0;
		m = l + r;
		m = m / 2;
		for(int i = 0; i < n; i++) {
			if(a[i] > m)
				sum += m;
			else
				sum += a[i];
		}
		if((sum / m) >= k)
			l = m;
		else r = m;
	}
	cout << l;
}