2 1
1 1
 4 1
2 2 1 1
 10 1
2 6 3 4 2 4 4 3 2 1
 2 1
999152 999153
 8 1000000
1 1 5 1000000 1000000 2 2 2
 9 2
1 6 1 5 5 8 6 8 7
 15 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
 1 4
8
 10 1
6 3 1 3 6 4 1 3 6 4
 10 1
1 2 3 5 6 8 10 11 9 4
 7 2
1 5 5 8 9 8 8
 2 1000000
1 1000000
 8 2
3 13 9 8 3 13 9 14
 1 1
1
 2 1
1 2

2
 2
 4
 1
 2
 4
 15
 1
 7
 2
 4
 1
 5
 1
 1

line1 = input()
line2 = input()
line1 = line1.split(' ')
line2  = line2.split(' ')
line2 = [int(x) for x in line2]
n = int(line1[0])
k = int (line1[1])
a = {}
for i in line2:
    if i not in a:
      a[i] =  1
    else:
        a[i] = a[i] + 1
b = list(a.keys())
b.sort()

for j in range(len(b) -1):
    if b[j] < b[j+1] and b[j+1] <= b[j] + k:
        a[b[j]] = 0
c = list(a.values())
s = sum(c)
print(s)
#7 1
#101 53 42 102 101 55 54
