program main
    implicit none
    integer::N,K,ans=0,ref,i,j
    integer,allocatable::P(:)
    read*,N,K
    allocate(P(N))
    read*,P
    do i=minval(P)-1,maxval(P)+1
        ref=0
        do j=1,N
            if(P(j)>=i)ref=ref+1
        end do
        if(ref<=K)ans=max(ans,ref)
    end do
    print'(i0)',ans
end program main