結果

問題 No.2374 ASKT Subsequences
ユーザー tenten
提出日時 2023-07-11 15:21:16
言語 Java
(openjdk 23)
結果
AC  
実行時間 942 ms / 2,000 ms
コード長 2,393 bytes
コンパイル時間 3,033 ms
コンパイル使用メモリ 85,160 KB
実行使用メモリ 63,160 KB
最終ジャッジ日時 2024-09-13 05:39:38
合計ジャッジ時間 17,222 ms
ジャッジサーバーID
(参考情報)
judge3 / judge2
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 3
other AC * 28
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

import java.io.*;
import java.util.*;
import java.util.stream.*;
public class Main {
public static void main(String[] args) throws Exception {
Scanner sc = new Scanner();
int n = sc.nextInt();
int[] values = new int[n];
for (int i = 0; i < n; i++) {
values[i] = sc.nextInt();
}
long ans = 0;
for (int i = 1; i <= 2000; i++) {
int[] add = new int[]{-i - 10, i, -i - 1};
ArrayList<HashMap<Integer, Long>> counts = new ArrayList<>();
for (int j = 0; j < 4; j++) {
counts.add(new HashMap<>());
}
for (int x : values) {
for (int j = 2; j >= 0; j--) {
if (counts.get(j).containsKey(x + add[j])) {
counts.get(j + 1).put(x, counts.get(j + 1).getOrDefault(x, 0L) + counts.get(j).get(x + add[j]));
}
}
counts.get(0).put(x, counts.get(0).getOrDefault(x, 0L) + 1);
}
for (long x : counts.get(3).values()) {
ans += x;
}
}
System.out.println(ans);
}
}
class Utilities {
static String arrayToLineString(Object[] arr) {
return Arrays.stream(arr).map(x -> x.toString()).collect(Collectors.joining("\n"));
}
static String arrayToLineString(int[] arr) {
return String.join("\n", Arrays.stream(arr).mapToObj(String::valueOf).toArray(String[]::new));
}
}
class Scanner {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
StringTokenizer st = new StringTokenizer("");
StringBuilder sb = new StringBuilder();
public Scanner() throws Exception {
}
public int nextInt() throws Exception {
return Integer.parseInt(next());
}
public long nextLong() throws Exception {
return Long.parseLong(next());
}
public double nextDouble() throws Exception {
return Double.parseDouble(next());
}
public int[] nextIntArray() throws Exception {
return Stream.of(br.readLine().split(" ")).mapToInt(Integer::parseInt).toArray();
}
public String next() throws Exception {
while (!st.hasMoreTokens()) {
st = new StringTokenizer(br.readLine());
}
return st.nextToken();
}
}
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
0