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())
bacterias = {}
for el in list(map(int, input().split())):
    if el not in bacterias.keys():
        bacterias.update({el: [1, 1]})
    else:
        bacterias[el][0] += 1
bacterias_weights = list(bacterias.keys())
bacterias_weights.sort()
for j in range(len(bacterias_weights)):
    for i in range(j, len(bacterias_weights)):
        if bacterias_weights[i] > bacterias_weights[j]+k:
            break
        if bacterias_weights[j] < bacterias_weights[i] <= bacterias_weights[j] + k:
            bacterias[bacterias_weights[j]][1] = 0
            break
count = 0
for bacteria in bacterias.keys():
    if bacterias[bacteria][1]:
        count += bacterias[bacteria][0]
print(count)