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

n, k = [int(x) for x in input().split(' ')]
a = [int(x) for x in input().split(' ')]
a_dict = {}
c = 0
for x in a:
    if x in a_dict.keys():
        a_dict[x] += 1
    else:
        a_dict[x] = 1
a = [(k, v) for (k, v) in a_dict.items()]
a.sort(key=lambda x:x[0])
l = len(a)
for i in range(1, l):
    if a[i][0] - a[i-1][0] <= k:
        c += a[i-1][1]
        c += a[i][1] - 1
        a[i] = [a[i][0], 1]

print(n - c)