結果
問題 | No.2053 12345... |
ユーザー |
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提出日時 | 2023-03-01 11:27:24 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 274 ms / 2,000 ms |
コード長 | 1,938 bytes |
コンパイル時間 | 3,002 ms |
コンパイル使用メモリ | 91,312 KB |
実行使用メモリ | 60,880 KB |
最終ジャッジ日時 | 2024-09-16 10:36:36 |
合計ジャッジ時間 | 10,458 ms |
ジャッジサーバーID (参考情報) |
judge6 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | AC * 31 |
ソースコード
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 prev = sc.nextInt();int length = 0;long ans = 0;for (int i = 0; i < n - 1; i++) {int x = sc.nextInt();if (x - prev == 1) {length++;} else {ans += getCount(length);length = 0;}prev = x;}ans += getCount(length);System.out.println(ans);}static long getCount(long x) {return (x + 1) * x / 2;}}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();}}