#include <iostream>
#include <fstream>
#include <cstdio>
using namespace std;
ofstream g("transport.out");
int n,k,amax,s,a,i;
int main()
{
    freopen("transport.in","r",stdin);
    scanf("%d" "%d",&n,&k);
    amax=0;
    for(i=1;i<=n;i++)
    {
        scanf("%d",&a);
        s=s+a;
        if(a>amax)
            amax=a;
    }
    if(s/k>amax)
    {
        g<<s/k;
    }
    else g<<amax;
    return 0;
}