結果
問題 | No.826 連絡網 |
ユーザー | tenten |
提出日時 | 2023-03-15 10:00:55 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 301 ms / 2,000 ms |
コード長 | 2,597 bytes |
コンパイル時間 | 3,367 ms |
コンパイル使用メモリ | 90,100 KB |
実行使用メモリ | 46,688 KB |
最終ジャッジ日時 | 2024-09-18 08:36:48 |
合計ジャッジ時間 | 7,530 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 49 ms
36,884 KB |
testcase_01 | AC | 48 ms
36,732 KB |
testcase_02 | AC | 49 ms
36,968 KB |
testcase_03 | AC | 56 ms
37,120 KB |
testcase_04 | AC | 60 ms
37,048 KB |
testcase_05 | AC | 55 ms
37,136 KB |
testcase_06 | AC | 55 ms
37,116 KB |
testcase_07 | AC | 62 ms
37,304 KB |
testcase_08 | AC | 58 ms
37,028 KB |
testcase_09 | AC | 65 ms
37,332 KB |
testcase_10 | AC | 52 ms
37,140 KB |
testcase_11 | AC | 60 ms
36,980 KB |
testcase_12 | AC | 209 ms
44,484 KB |
testcase_13 | AC | 119 ms
40,612 KB |
testcase_14 | AC | 166 ms
43,140 KB |
testcase_15 | AC | 84 ms
38,844 KB |
testcase_16 | AC | 136 ms
40,944 KB |
testcase_17 | AC | 115 ms
40,632 KB |
testcase_18 | AC | 115 ms
40,076 KB |
testcase_19 | AC | 236 ms
45,480 KB |
testcase_20 | AC | 235 ms
45,428 KB |
testcase_21 | AC | 75 ms
37,648 KB |
testcase_22 | AC | 112 ms
40,720 KB |
testcase_23 | AC | 125 ms
41,304 KB |
testcase_24 | AC | 99 ms
39,448 KB |
testcase_25 | AC | 301 ms
46,688 KB |
testcase_26 | AC | 101 ms
39,784 KB |
testcase_27 | AC | 216 ms
44,908 KB |
testcase_28 | AC | 164 ms
43,404 KB |
testcase_29 | AC | 112 ms
40,316 KB |
testcase_30 | AC | 273 ms
46,608 KB |
testcase_31 | AC | 120 ms
40,904 KB |
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(); UnionFindTree uft = new UnionFindTree(n + 1); for (int i = 2; i <= n; i++) { for (int j = 2; j * i <= n; j++) { uft.unite(i, j * i); } } System.out.println(uft.getCount(p)); } static class UnionFindTree { int[] parents; int[] counts; public UnionFindTree(int size) { parents = new int[size]; counts = new int[size]; for (int i = 0; i < size; i++) { parents[i] = i; counts[i] = 1; } } public int find(int x) { if (x == parents[x]) { return x; } else { return parents[x] = find(parents[x]); } } public void unite(int x, int y) { int xx = find(x); int yy = find(y); if (xx != yy) { parents[yy] = xx; counts[xx] += counts[yy]; } } public int getCount(int x) { return counts[find(x)]; } } } 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(); } }