結果
問題 | No.2178 Payable Magic Items |
ユーザー |
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提出日時 | 2023-01-25 11:00:41 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 383 ms / 4,000 ms |
コード長 | 2,393 bytes |
コンパイル時間 | 4,687 ms |
コンパイル使用メモリ | 89,588 KB |
実行使用メモリ | 49,632 KB |
最終ジャッジ日時 | 2024-06-26 16:17:29 |
合計ジャッジ時間 | 10,646 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 23 |
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 k = sc.nextInt();int[] base = new int[k];base[0] = 1;for (int i = 1; i < k; i++) {base[i] = base[i - 1] * 5;}int count = base[k - 1] * 5;boolean[] enables = new boolean[count];int[] counts = new int[count];for (int i = 0; i < n; i++) {int mask = 0;for (char c : sc.next().toCharArray()) {mask *= 5;mask += c - '0';}counts[mask]++;}int ans = 0;for (int i = count - 1; i >= 0; i--) {for (int j = 0; j < k && !enables[i]; j++) {if (i / base[j] % 5 < 4) {enables[i] = enables[i + base[j]];}}if (enables[i]) {ans += counts[i];}enables[i] |= (counts[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();}}