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

var numbers = readline().split(" ").map(function(x) { return parseInt(x); });
var n = numbers[0], k = numbers[1];
var cells = readline().split(" ").map(function(x) { return parseInt(x); });

cells.sort((a,b) => a-b);

var eat = 0;

var i = 0;
var j = 0;

while (i < cells.length && j < cells.length) {
    if (cells[i]<cells[j] && cells[j]<=cells[i]+k) {
        eat++;
        i++;
    } else {
        if(cells[j]>cells[i]+k) {
            i++
        } else {
            j++
        }
    }
}

print(cells.length - eat);

