/* -*- coding: utf-8 -*-
 *
 * 3758.cc:  No.3758 Fan Meeting - yukicoder
 */

#include<cstdio>
#include<algorithm>
#include<functional>

using namespace std;

/* constant */

const int MAX_N = 300000;

/* typedef */

using ll = long long;

/* global variables */

int as[MAX_N];

/* subroutines */

ll calc(int n, int t) {
  ll r = 0;
  for (int i = 0; i < n && as[i] > t; i += t) r += as[i];
  return r;
}

/* main */

int main() {
  int n, s;
  scanf("%d%d", &n, &s);
  for (int i = 0; i < n; i++) scanf("%d", as + i);
  sort(as, as + n, greater<int>());

  int t0 = 0, t1 = as[0];
  while (t0 + 1 < t1) {
    int t = (t0 + t1) / 2;
    if (calc(n, t) < s) t1 = t;
    else t0 = t;
  }

  printf("%d\n", t1);
  
  return 0;
}