import sys
#sys.setrecursionlimit(n)
import heapq
import re
import bisect
import random
import math
import itertools
from collections import defaultdict, deque
from copy import deepcopy

n, k = map(int, input().split())
w = [int(input()) for i in range(n)]
bit_max = 1000000
d = defaultdict(int)

def bit_add(bit_add_x, bit_add_val):
    while bit_add_x <= bit_max:
        d[bit_add_x] += bit_add_val
        bit_add_x += bit_add_x & (-bit_add_x)

def bit_sum(bit_sum_x):
    bit_sum_total = 0
    while bit_sum_x > 0:
        bit_sum_total += d[bit_sum_x]
        bit_sum_x = bit_sum_x & bit_sum_x - 1
    return bit_sum_total

for ww in w:
  if ww > 0:
    ww -= 1
    if bit_sum(bit_max - ww) < k:
      bit_add(bit_max - ww, 1)
  elif ww < 0:
    ww += 1
    if bit_sum(bit_max + ww) - bit_sum(bit_max + ww - 1) > 0:
      bit_add(bit_max + ww, -1)

print(bit_sum(bit_max))