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

#     Educational Codeforces Round 45 (Rated for Div. 2)
import collections
from functools import cmp_to_key
#key=cmp_to_key(lambda x,y: 1 if x not in y else -1 )

import sys
def getIntList():
    return list(map(int, input().split()))    

 
            
    
n,K = getIntList()

z =  getIntList()
z.sort()


res = 0
last = -1
lastc = 0
for x in z:
    if x == last:
        lastc+=1
    elif last+K >= x:
        last = x
        lastc = 1
    else:
        res += lastc
        last = x
        lastc = 1

res += lastc

print(res)
