Submission #1314707

#	Time	Username	Problem	Language	Result	Execution time	Memory
1314707		nhq0914	A Huge Tower (CEOI10_tower)	C++17	100 / 100	85 ms	2616 KiB

tower

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

const int mod = 1e9 + 9;

int n, D, ans = 1;

int main(){
// 	freopen("data.txt", "r", stdin);

	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);

	cin >> n >> D;

	vector<int>a(n);
	for(int &x: a) cin >> x;

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

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

	cout << ans;
	return 0;
}

• 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