Submission #762691

#	Time	Username	Problem	Language	Result	Execution time	Memory
762691		hfoliacots	A Huge Tower (CEOI10_tower)	C++14	100 / 100	236 ms	14748 KiB

tower

#include <bits/stdc++.h>

using namespace std;

#define int long long

signed main() {
	int n, d;
	int inf = 1e9+9;
	cin >> n >> d;
	vector<int> a(n);
	for (int i = 0; i < n; i++) cin >> a[i];
	sort(a.begin(), a.end());
	vector<int> b(n);
	int j = n-2;
	int cont = 1;
	for (int i = n-1; i > -1; i--) {
		while (j >= 0 && a[i] <= a[j]+d) {
			j--;
			cont++;
		}
		cont--;
		b[i] = cont % inf;
	}
	vector<int> dp(n);
	dp[0] = 1;
	for (int i = 1; i < n; i++) {
		dp[i] = (dp[i-1] * (b[i] + 1)) % inf;
	}
	//print(dp);
	cout << dp[n-1] << endl;
}

• 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