Submission #1091147

#	Time	Username	Problem	Language	Result	Execution time	Memory
1091147		nrg_studio	A Huge Tower (CEOI10_tower)	C++17	100 / 100	101 ms	8788 KiB

tower

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

#define ll long long

int main() {
	ios::sync_with_stdio(false); cin.tie(0);

	int mod = 1e9+9;
	int n, d; cin >> n >> d;
	vector<int> a(n); ll ans = 1;
	for (int i=0;i<n;i++) {cin >> a[i];}

	sort(a.begin(),a.end());
	auto it = a.begin();
	while (it!=a.end()) {
		int diff = (it++)-lower_bound(a.begin(),a.end(),*it-d)+1;
		ans = (ans*diff)%mod;
	} cout << ans << '\n';
}

• 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