#include <fstream>
using namespace std;

ifstream fin ("transport.in");
ofstream fout ("transport.out");

int n ,k ,mx,v[16001],i,c;

int main()
{
    fin>>n>>k;
    int s=0;
    for(i=0;i<n;i++){
        fin>>v[i];
        if(k==1){
            s=s+v[i];
        }
        if(v[i]>mx){
            mx=v[i];
        }
    }
    fout<<mx;
    return 0;
}
///f(x)=cate transporturi face daca c=x
///(s/c)+1