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Submission #391077

# Submission time Handle Problem Language Result Execution time Memory
391077 2021-04-17T19:26:58 Z yu_lim A Huge Tower (CEOI10_tower) Java 11
100 / 100
 711 ms 45440 KB 
import java.util.*;
import java.io.*;

public class tower {

	public static void main(String[] args) throws IOException {

		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		StringTokenizer str = new StringTokenizer(br.readLine());
		int N = Integer.parseInt(str.nextToken());
		int D = Integer.parseInt(str.nextToken());
		int M = 1_000_000_009;

		int[] blocks = new int[N];
		str = new StringTokenizer(br.readLine());
		for (int i = 0; i < N; i++)
			blocks[i] = Integer.parseInt(str.nextToken());
		br.close();

		Arrays.sort(blocks);
		long[] towers = new long[N];
		towers[0] = 1;
		int prev = 0;
		for (int i = 0; i < N; i++) {
			while (prev < i) {
				if (blocks[prev] + D < blocks[i])
					prev++;
				else
					break;
			}
			// # of blocks <= i that can't stack on i
			if (i > 0)
				towers[i] = (((i - prev + 1) % M) * towers[i - 1]) % M;
		}
		System.out.println(towers[N - 1] % M);
	}
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 73 ms 8532 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 73 ms 8392 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 71 ms 8524 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 71 ms 8244 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 73 ms 8268 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 71 ms 8416 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 74 ms 8204 KB Output is correct

Subtask #8
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 75 ms 8488 KB Output is correct

Subtask #9
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 74 ms 8268 KB Output is correct

Subtask #10
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 76 ms 8204 KB Output is correct

Subtask #11
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 74 ms 8480 KB Output is correct

Subtask #12
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 74 ms 8464 KB Output is correct

Subtask #13
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 77 ms 8496 KB Output is correct

Subtask #14
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 75 ms 8340 KB Output is correct

Subtask #15
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 105 ms 9284 KB Output is correct

Subtask #16
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 286 ms 17092 KB Output is correct

Subtask #17
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 361 ms 19376 KB Output is correct

Subtask #18
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 711 ms 23548 KB Output is correct
2 Correct 704 ms 23152 KB Output is correct

Subtask #19
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 585 ms 32984 KB Output is correct
2 Correct 558 ms 33132 KB Output is correct

Subtask #20
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 637 ms 45440 KB Output is correct
2 Correct 708 ms 44988 KB Output is correct