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

terminal:true;
var aux = readline().split(" ").map(function(x) { return parseInt(x); });
var n=aux[0],k=aux[1];
var a = readline().split(" ").map(function(x) { return parseInt(x); });
a.sort(function (a,b)
{
    return a>=b;
})
var e=1,rez=0;
for(var i=1;i<n;i++)
{
    if(a[i]==a[i-1])
        e++;
    else
    {
        if(a[i-1]+k>=a[i])
            rez+=e;
        e=1;
    }
}
print(n-rez);