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 lastBacteriaStanding(arr,k,n):
    ans=n
    arr.sort()
    d=1
    for i in range(0,n-1):
        curr=arr[i]
        if(curr==arr[i+1]):
            d+=1
        elif (arr[i]+k>=arr[i+1] and arr[i]<arr[i+1]):
            ans-=d
            d=1
        else:
            d=1
    return ans

n,k=map(int,input().split(' '))
arr=list(map(int,input().split(' ')))
print(lastBacteriaStanding(arr,k,n))