#include <iostream>

#include <vector>
#include <algorithm>
using namespace std;

int main(){


  int n,m,ans;
  cin >> n >> m;
  vector<int> v;
  ans = 0;
  for ( int i = 0; i < n; i++) {
    int a;
    cin >> a;
    v.push_back(a);
  }
  sort(v.begin(),v.end());
  for (int i = 0; i < m; i++) {
    if(v[ans] > 0){
      v[ans]--;
    }else{
      v[ans + 1]--;
      ans ++;
    }
  }
  if (v[ans] == 0) {
    cout << ans + 1 << "\n";
  }else{
    cout << ans << "\n";
  }
  return 0;
}