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

def read():
    return int(input())


def readlist():
    return list(map(int, input().split()))


def readmap():
    return map(int, input().split())


N, K = readmap()
A = readlist()

A.sort()

count = 0
same = 1
for i in range(N-1):
    if A[i] == A[i+1]:
        same += 1
    elif A[i+1] <= A[i] + K:
        count += same
        same = 1
    else:
        same = 1

print(N - count)