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())
counts = {}
indi = set()
for s in map(int, input().split()):
    counts[s] = counts.get(s, 0) + 1
    indi.add(s)

sizes = list(indi)
sizes.sort()

i = 0
while i < len(sizes):
    if i + 1 < len(sizes) and sizes[i] < sizes[i + 1] and sizes[i] + K >= sizes[i + 1] and counts[sizes[i]] != 1:
        counts[sizes[i]] = 1
    else:
        i += 1

i = 0
while i < len(sizes):
    if i + 1 < len(sizes) and sizes[i] < sizes[i + 1] and sizes[i] + K >= sizes[i + 1] and counts[sizes[i]] != 0:
        counts[sizes[i]] = 0
    else:
        i += 1
        
counting = 0
for key in counts.keys():
    counting += counts[key]

print(counting)