Submission #1006336

#	Time	Username	Problem	Language	Result	Execution time	Memory
1006336		addsd	A Huge Tower (CEOI10_tower)	Java	100 / 100	876 ms	45452 KiB

tower

import java.util.*;
import java.io.*;
 
public class tower {
	public static void main(String[] args) throws IOException {
		Scanner in = new Scanner(System.in);
		int N = in.nextInt(), D = in.nextInt(), M = 1_000_000_009;
		int[] block = new int[N];
		for (int i = 0; i < N; i++)
			block[i] = in.nextInt();
		Arrays.sort(block);
		long ways = 1;
		for (int i = 1, p = 0; i < N; i++) {
			while (p < i && block[p] + D < block[i])
				p++;
			ways = ((i - p + 1) * ways) % M;
		}
		System.out.println(ways);
	}
}

• 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