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,raw_input().split())
a=map(int,raw_input().split())
b=dict()
for i in xrange(n):
    if a[i] in b:
        b[a[i]]+=1
    else: b[a[i]]=1
c=[]
for i in b:
    c.append([i,b[i]])
c=sorted(c,key=lambda x: x[0])
rem=0
for i in xrange(len(c)-1):
    if c[i+1][0]<=c[i][0]+k: c[i][1]=0
for i in xrange(len(c)):
    rem+=c[i][1]
print rem
     