Submission #1172056

#	Time	Username	Problem	Language	Result	Execution time	Memory
1172056		nguyenkhangninh99	A Huge Tower (CEOI10_tower)	C++17	100 / 100	83 ms	5192 KiB

tower

#include <bits/stdc++.h>
using namespace std;

#define int long long

const int mod = 1e9 + 9;

signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);

    int n, d; cin >> n >> d;
	vector<int> a(n);
	for (int i = 0; i < n; i++) cin >> a[i];

	sort(a.begin(), a.end()); 

	int res = 1;
	for (int l = 0, r = 0; l < n; l++) {
		while(r < n - 1 && a[r + 1] - a[l] <= d) r++;
		(res *= (r - l + 1)) %= mod;
	}

	cout << res;
 }

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 5 / 5
• Subtask 4: 5 / 5
• Subtask 5: 5 / 5
• Subtask 6: 5 / 5
• Subtask 7: 5 / 5
• Subtask 8: 5 / 5
• Subtask 9: 5 / 5
• Subtask 10: 5 / 5
• Subtask 11: 5 / 5
• Subtask 12: 5 / 5
• Subtask 13: 5 / 5
• Subtask 14: 5 / 5
• Subtask 15: 5 / 5
• Subtask 16: 5 / 5
• Subtask 17: 5 / 5
• Subtask 18: 5 / 5
• Subtask 19: 5 / 5
• Subtask 20: 5 / 5