結果
問題 | No.2260 Adic Sum |
ユーザー |
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提出日時 | 2023-04-10 10:34:27 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 1,187 ms / 2,000 ms |
コード長 | 2,353 bytes |
コンパイル時間 | 2,488 ms |
コンパイル使用メモリ | 95,920 KB |
実行使用メモリ | 62,340 KB |
最終ジャッジ日時 | 2024-10-06 07:30:56 |
合計ジャッジ時間 | 17,121 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 33 |
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 p = sc.nextInt();int[] values = new int[n];for (int i = 0; i < n; i++) {values[i] = sc.nextInt();}Arrays.sort(values);int current = 1;ArrayList<Integer> ps = new ArrayList<>();while (current * (long)p <= 1000000000) {current *= p;ps.add(current);}long ans = 0;for (int x : ps) {int[] mods = new int[n];HashMap<Integer, Integer> counts = new HashMap<>();for (int i = 0; i < n; i++) {mods[i] = values[i] % x;counts.put(mods[i], counts.getOrDefault(mods[i], 0) + 1);}for (int i = 0; i < n; i++) {counts.put(mods[i], counts.get(mods[i]) - 1);ans += counts.getOrDefault(mods[i], 0);}}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();}}