제출 #367299

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
367299		Vectorized	A Huge Tower (CEOI10_tower)	Java	100 / 100	734 ms	51704 KiB

tower

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.StringTokenizer;

public class tower {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st = new StringTokenizer(br.readLine());
        long MOD = 1000000009;
        int n = Integer.parseInt(st.nextToken()), m = Integer.parseInt(st.nextToken());
        int[] ar = new int[n];
        st = new StringTokenizer(br.readLine());
        for (int i = 0; i < n; i++) {
            ar[i] = Integer.parseInt(st.nextToken());
        }
        long ans = 1;
        Arrays.sort(ar);
        int pointer = 0;
        for (int i = 0; i < n; i++) {
            for(;pointer<n && ar[pointer] - ar[i] <= m;pointer++){}
//            System.out.println(i + " " + pointer);
            ans = ans * ((long)(pointer - i)) % MOD;
        }
        System.out.println(ans);
    }
}

• Subtask 1: 5 / 5
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• Subtask 20: 5 / 5