結果
問題 | No.368 LCM of K-products |
ユーザー |
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提出日時 | 2023-12-13 19:23:50 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 322 ms / 2,000 ms |
コード長 | 2,879 bytes |
コンパイル時間 | 2,875 ms |
コンパイル使用メモリ | 86,020 KB |
実行使用メモリ | 45,760 KB |
最終ジャッジ日時 | 2024-09-27 05:30:58 |
合計ジャッジ時間 | 8,781 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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ファイルパターン | 結果 |
---|---|
other | AC * 35 |
ソースコード
import java.io.*;import java.util.*;import java.util.stream.*;public class Main {static final int MOD = 1000000007;public static void main(String[] args) throws Exception {Scanner sc = new Scanner();int n = sc.nextInt();int k = sc.nextInt();HashMap<Integer, ArrayList<Integer>> allCount = new HashMap<>();while (n-- > 0) {int x = sc.nextInt();HashMap<Integer, Integer> counts = new HashMap<>();for (int i = 2; i <= Math.sqrt(x); i++) {while (x % i == 0) {counts.put(i, counts.getOrDefault(i, 0) + 1);x /= i;}}if (x > 1) {counts.put(x, 1);}for (int y : counts.keySet()) {if (!allCount.containsKey(y)) {allCount.put(y, new ArrayList<>());}allCount.get(y).add(counts.get(y));}}long ans = 1;for (int x : allCount.keySet()) {Collections.sort(allCount.get(x));int sum = 0;for (int i = 0; i < k && i < allCount.get(x).size(); i++) {sum += allCount.get(x).get(allCount.get(x).size() - i - 1);}ans *= pow(x, sum);ans %= MOD;}System.out.println(ans);}static long pow(long x, int p) {if (p == 0) {return 1;} else if (p % 2 == 0) {return pow(x * x % MOD, p / 2);} else {return pow(x, p - 1) * x % MOD;}}}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();}}