結果
問題 | No.556 仁義なきサルたち |
ユーザー | Grenache |
提出日時 | 2017-08-12 11:43:42 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 122 ms / 2,000 ms |
コード長 | 5,691 bytes |
コンパイル時間 | 3,499 ms |
コンパイル使用メモリ | 78,652 KB |
実行使用メモリ | 40,156 KB |
最終ジャッジ日時 | 2024-10-13 04:46:10 |
合計ジャッジ時間 | 6,036 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
(要ログイン)
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 | 50 ms
37,248 KB |
testcase_01 | AC | 51 ms
37,020 KB |
testcase_02 | AC | 51 ms
37,292 KB |
testcase_03 | AC | 52 ms
37,104 KB |
testcase_04 | AC | 51 ms
37,196 KB |
testcase_05 | AC | 52 ms
37,084 KB |
testcase_06 | AC | 51 ms
37,012 KB |
testcase_07 | AC | 51 ms
37,004 KB |
testcase_08 | AC | 52 ms
37,260 KB |
testcase_09 | AC | 58 ms
37,184 KB |
testcase_10 | AC | 63 ms
37,688 KB |
testcase_11 | AC | 79 ms
37,904 KB |
testcase_12 | AC | 76 ms
37,464 KB |
testcase_13 | AC | 87 ms
38,336 KB |
testcase_14 | AC | 107 ms
38,764 KB |
testcase_15 | AC | 107 ms
38,944 KB |
testcase_16 | AC | 113 ms
39,592 KB |
testcase_17 | AC | 113 ms
39,692 KB |
testcase_18 | AC | 120 ms
39,860 KB |
testcase_19 | AC | 117 ms
39,736 KB |
testcase_20 | AC | 113 ms
40,156 KB |
testcase_21 | AC | 122 ms
40,096 KB |
ソースコード
import java.io.*; import java.util.*; public class Main_yukicoder556_1 { private static Scanner sc; private static Printer pr; private static void solve() { int n = sc.nextInt(); int[] boss = new int[n]; for (int i = 0; i < n; i++) { boss[i] = i; } UnionFindKai uf = new UnionFindKai(n); int m = sc.nextInt(); for (int i = 0; i < m; i++) { int a = sc.nextInt() - 1; int b = sc.nextInt() - 1; uf.unite(a, b); } for (int i = 0; i < n; i++) { pr.println(uf.find(i) + 1); } } @SuppressWarnings("unused") private static class UnionFindKai { int n; // cnt : 異なる集合の数 int cnt; // parent[x] : 0~n-1 の場合、要素xのroot要素 // : -1~-n の場合、自分自身がroot要素、 // -parent[x]でxを含む集合の要素数 int[] parent; UnionFindKai(int n) { this.n = n; cnt = n; parent = new int[n]; Arrays.fill(parent, -1); } // xのrootを求める int find(int x) { if (parent[x] < 0) { return x; } else { return parent[x] = find(parent[x]); } } // xとyが同じ集合に属するのか boolean same(int x, int y) { return find(x) == find(y); } // xとyの属する集合を併合する void unite(int x, int y) { x = find(x); y = find(y); if (x == y) { return; } cnt--; // 要素数が大きい集合をrootにする if (count(x) > count(y)) { parent[x] += parent[y]; parent[y] = x; } else if (count(x) < count(y)) { parent[y] += parent[x]; parent[x] = y; } else { // 要素数が同じときはrootが小さいほうをrootにする if (find(x) < find(y)) { parent[x] += parent[y]; parent[y] = x; } else { parent[y] += parent[x]; parent[x] = y; } } return; } // 要素xを含む集合の要素数 int count(int x) { return -parent[find(x)]; } // 異なる集合の数 int count() { return cnt; } } // --------------------------------------------------- public static void main(String[] args) { sc = new Scanner(System.in); pr = new Printer(System.out); solve(); pr.close(); sc.close(); } @SuppressWarnings("unused") private static class Scanner { BufferedReader br; Scanner (InputStream in) { br = new BufferedReader(new InputStreamReader(in)); } private boolean isPrintable(int ch) { return ch >= '!' && ch <= '~'; } private boolean isCRLF(int ch) { return ch == '\n' || ch == '\r' || ch == -1; } private int nextPrintable() { try { int ch; while (!isPrintable(ch = br.read())) { if (ch == -1) { throw new NoSuchElementException(); } } return ch; } catch (IOException e) { throw new NoSuchElementException(); } } String next() { try { int ch = nextPrintable(); StringBuilder sb = new StringBuilder(); do { sb.appendCodePoint(ch); } while (isPrintable(ch = br.read())); return sb.toString(); } catch (IOException e) { throw new NoSuchElementException(); } } int nextInt() { try { // parseInt from Integer.parseInt() boolean negative = false; int res = 0; int limit = -Integer.MAX_VALUE; int radix = 10; int fc = nextPrintable(); if (fc < '0') { if (fc == '-') { negative = true; limit = Integer.MIN_VALUE; } else if (fc != '+') { throw new NumberFormatException(); } fc = br.read(); } int multmin = limit / radix; int ch = fc; do { int digit = ch - '0'; if (digit < 0 || digit >= radix) { throw new NumberFormatException(); } if (res < multmin) { throw new NumberFormatException(); } res *= radix; if (res < limit + digit) { throw new NumberFormatException(); } res -= digit; } while (isPrintable(ch = br.read())); return negative ? res : -res; } catch (IOException e) { throw new NoSuchElementException(); } } long nextLong() { try { // parseLong from Long.parseLong() boolean negative = false; long res = 0; long limit = -Long.MAX_VALUE; int radix = 10; int fc = nextPrintable(); if (fc < '0') { if (fc == '-') { negative = true; limit = Long.MIN_VALUE; } else if (fc != '+') { throw new NumberFormatException(); } fc = br.read(); } long multmin = limit / radix; int ch = fc; do { int digit = ch - '0'; if (digit < 0 || digit >= radix) { throw new NumberFormatException(); } if (res < multmin) { throw new NumberFormatException(); } res *= radix; if (res < limit + digit) { throw new NumberFormatException(); } res -= digit; } while (isPrintable(ch = br.read())); return negative ? res : -res; } catch (IOException e) { throw new NoSuchElementException(); } } float nextFloat() { return Float.parseFloat(next()); } double nextDouble() { return Double.parseDouble(next()); } String nextLine() { try { int ch; while (isCRLF(ch = br.read())) { if (ch == -1) { throw new NoSuchElementException(); } } StringBuilder sb = new StringBuilder(); do { sb.appendCodePoint(ch); } while (!isCRLF(ch = br.read())); return sb.toString(); } catch (IOException e) { throw new NoSuchElementException(); } } void close() { try { br.close(); } catch (IOException e) { // throw new NoSuchElementException(); } } } private static class Printer extends PrintWriter { Printer(PrintStream out) { super(out); } } }