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

from sys import stdin, stdout, setrecursionlimit
from gc import disable

#stdin = open("input.txt","r")
#stdout = open("output.txt","w")
  
#setrecursionlimit((1<<31)-1)

 
gets = input
puts = print
input = stdin.readline
print = stdout.write


def main() -> int:
    disable()
    n,K = map(int,input().split())
    l = sorted((map(int,input().split())),reverse = True)
    t = 1
    k = False
    for i in reversed(range(n-1)):
        if (l[i]==l[i-1]):
            t+=1
        if (l[i-1]>l[i] and l[i-1]<=l[i]+K):            
            m = i
            p = l[i]
            
            for j in range(t):
                if (p == l[m]):
                    del l[m]
                    
            t = 1
    
    print("%i"%(len(l))) 
    return 0;
 
if (__name__ == "__main__"):
    main()
  
#stdin.close()
#stdout.close()