#include<iostream>
#include<cstring>
#include<cstdio>
#include<algorithm>
#define N 1000
#define M 1000
using namespace std;
int n,f;
int a[N];
bool check(int x)
{
int s=0;
for(int i=1;i<=n;i++) s+=a[i]/x;
if(s>=f) return true;
return false;
}
int main()
{
cin>>n>>f;
f++;
int sum=0;
for(int i=1;i<=n;i++)
{
cin>>a[i];
sum+=a[i];
}
int l=0,r=sum/f;
while(l<r)
{
int mid=(l+r+1)/2;
if(check(mid)) l=mid;
else r=mid-1;
}
cout<<l<<endl;
}