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 = map(int, input().split())
bacteria = list(map(int, input().split()))
bacteria.sort()

previous_bacterium = bacteria[0]
same_bacteria = 0
for bacterium in bacteria[1:]:
    if bacterium - previous_bacterium <= k:
        #if bacterium - previous_bacterium <= k:
        n -= same_bacteria + 1
        #same_bacteria = 0
    elif bacteria == previous_bacterium:
        same_bacteria += 1
    else:
        same_bacteria = 0
    previous_bacterium = bacterium

print(n)
