代码全WA，求助

$Code:$

#include <bits/stdc++.h>
using namespace std;
int main () {
	vector <int> s;
	int n, k, si, sum, ans = 1;
	cin >> n >> k;
	for (int i = 0; i < n; i ++) {
		cin >> si;
		s.push_back (si);
	}
	sort (s.begin (), s.end ());
	for (int i = 0; i < n; i ++) {
		sum = 1;
		for (int j = i + 1; j < n; j ++) {
			if (s[j] - s[i] > k) break;
			sum ++;
		}
		ans = max (ans, sum);
	}
	cout << ans << '\n';
	return 0;
}