結果
問題 | No.1477 Lamps on Graph |
ユーザー | neko_the_shadow |
提出日時 | 2021-04-18 14:26:02 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 1,142 ms / 2,000 ms |
コード長 | 7,048 bytes |
コンパイル時間 | 3,735 ms |
コンパイル使用メモリ | 93,528 KB |
実行使用メモリ | 95,580 KB |
最終ジャッジ日時 | 2023-09-17 07:41:33 |
合計ジャッジ時間 | 29,755 ms |
ジャッジサーバーID (参考情報) |
judge12 / judge11 |
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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 | 79 ms
51,748 KB |
testcase_01 | AC | 79 ms
51,680 KB |
testcase_02 | AC | 81 ms
51,924 KB |
testcase_03 | AC | 79 ms
51,912 KB |
testcase_04 | AC | 77 ms
49,688 KB |
testcase_05 | AC | 81 ms
51,564 KB |
testcase_06 | AC | 80 ms
51,600 KB |
testcase_07 | AC | 81 ms
51,784 KB |
testcase_08 | AC | 79 ms
51,720 KB |
testcase_09 | AC | 79 ms
51,492 KB |
testcase_10 | AC | 81 ms
51,624 KB |
testcase_11 | AC | 81 ms
51,560 KB |
testcase_12 | AC | 834 ms
74,180 KB |
testcase_13 | AC | 766 ms
70,864 KB |
testcase_14 | AC | 907 ms
74,552 KB |
testcase_15 | AC | 523 ms
64,120 KB |
testcase_16 | AC | 493 ms
65,724 KB |
testcase_17 | AC | 445 ms
65,832 KB |
testcase_18 | AC | 778 ms
76,984 KB |
testcase_19 | AC | 737 ms
71,176 KB |
testcase_20 | AC | 430 ms
62,408 KB |
testcase_21 | AC | 738 ms
72,540 KB |
testcase_22 | AC | 335 ms
59,752 KB |
testcase_23 | AC | 591 ms
64,580 KB |
testcase_24 | AC | 981 ms
79,220 KB |
testcase_25 | AC | 489 ms
61,808 KB |
testcase_26 | AC | 943 ms
78,060 KB |
testcase_27 | AC | 582 ms
67,432 KB |
testcase_28 | AC | 723 ms
69,100 KB |
testcase_29 | AC | 615 ms
67,040 KB |
testcase_30 | AC | 525 ms
67,220 KB |
testcase_31 | AC | 480 ms
66,108 KB |
testcase_32 | AC | 1,036 ms
95,580 KB |
testcase_33 | AC | 1,063 ms
92,480 KB |
testcase_34 | AC | 961 ms
76,032 KB |
testcase_35 | AC | 1,142 ms
89,532 KB |
testcase_36 | AC | 1,129 ms
86,600 KB |
testcase_37 | AC | 1,060 ms
83,780 KB |
testcase_38 | AC | 1,045 ms
83,032 KB |
testcase_39 | AC | 1,128 ms
89,164 KB |
ソースコード
package _1477; import java.io.BufferedReader; import java.io.EOFException; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.PrintStream; import java.io.PrintWriter; import java.io.UncheckedIOException; import java.math.BigInteger; import java.util.ArrayDeque; import java.util.ArrayList; import java.util.Deque; import java.util.List; import java.util.function.Supplier; import java.util.regex.Pattern; import java.util.stream.Collectors; import java.util.stream.IntStream; public class Main { public void exec() { int n = stdin.nextInt(); int m = stdin.nextInt(); int[] a = stdin.nextIntArray(n); List<List<Integer>> nexts = IntStream.range(0, n).mapToObj(unused -> new ArrayList<Integer>()).collect(Collectors.toList()); for (int i = 0; i < m; i++) { int u = stdin.nextInt()-1; int v = stdin.nextInt()-1; if (a[u]<a[v]) nexts.get(u).add(v); if (a[v]<a[u]) nexts.get(v).add(u); } boolean[] light = new boolean[n]; int k = stdin.nextInt(); for (int i = 0; i < k; i++ ) { int b = stdin.nextInt()-1; light[b] = true; } Tsort tsort = new Tsort(n); for (int i = 0; i < n; i++) { for (int j : nexts.get(i)) { tsort.add(i, j); } } List<Integer> p = tsort.run(); List<Integer> q = new ArrayList<>(); for (int cur : p) { if (!light[cur]) continue; q.add(cur); light[cur] = !light[cur]; for (int nxt : nexts.get(cur)) light[nxt] = !light[nxt]; } boolean all = true; for (int i = 0; i < n; i++) { if (light[i]) { all = false; break; } } if (all) { stdout.println(q.size()); for (int v : q) { stdout.println(v+1); } } else { stdout.println(-1); } } public class Tsort { private int[] count; private List<List<Integer>> nexts; public Tsort(int n) { this.count = new int[n]; this.nexts = IntStream.range(0, n).mapToObj(unused -> new ArrayList<Integer>()).collect(Collectors.toList()); } public void add(int from, int to) { this.count[to]++; this.nexts.get(from).add(to); } public List<Integer> run() { Deque<Integer> stack = IntStream.range(0, this.count.length).filter(i -> count[i]==0).boxed().collect(Collectors.toCollection(ArrayDeque::new)); List<Integer> result = new ArrayList<>(); while (!stack.isEmpty()) { int cur = stack.removeFirst(); result.add(cur); for (int nxt : nexts.get(cur)) { this.count[nxt]--; if (this.count[nxt]==0) { stack.add(nxt); } } } return result; } } private static final Stdin stdin = new Stdin(System.in); private static final Stdout stdout = new Stdout(System.out); public static void main(String[] args) { try { new Main().exec(); } finally { stdout.flush(); } } public static class Stdin { private Deque<String> queue; private BufferedReader in; private Pattern space; public Stdin(InputStream in) { this.queue = new ArrayDeque<>(); this.in = new BufferedReader(new InputStreamReader(in)); this.space = Pattern.compile(" "); } public String nextString() { if (queue.isEmpty()) { try { String line = in.readLine(); if (line == null) { throw new EOFException(); } space.splitAsStream(line).forEach(this.queue::addLast); } catch (IOException e) { throw new UncheckedIOException(e); } } return queue.removeFirst(); } public int nextInt() { return Integer.parseInt(nextString()); } public double nextDouble() { return Double.parseDouble(nextString()); } public long nextLong() { return Long.parseLong(nextString()); } public BigInteger nextBigInteger() { return new BigInteger(nextString()); } public String[] nextStringArray(int n) { String[] a = new String[n]; for (int i = 0; i < n; i++) a[i] = nextString(); return a; } public int[] nextIntArray(int n) { int[] a = new int[n]; for (int i = 0; i < n; i++) a[i] = nextInt(); return a; } public double[] nextDoubleArray(int n) { double[] a = new double[n]; for (int i = 0; i < n; i++) a[i] = nextDouble(); return a; } public long[] nextLongArray(int n) { long[] a = new long[n]; for (int i = 0; i < n; i++) a[i] = nextLong(); return a; } public BigInteger[] nexBigIntegerArray(int n) { BigInteger[] a = new BigInteger[n]; for (int i = 0; i < n; i++) a[i] = nextBigInteger(); return a; } public List<Integer> nextIntegerList(int n) { return nextList(n, this::nextInt); } public List<Long> nextLongList(int n) { return nextList(n, this::nextLong); } public List<Double> nextDoubleList(int n) { return nextList(n, this::nextDouble); } public List<String> nextStringList(int n) { return nextList(n, this::nextString); } public List<BigInteger> nextBigIntegerList(int n) { return nextList(n, this::nextBigInteger); } private <T> List<T> nextList(int n, Supplier<T> supplier) { List<T> a = new ArrayList<>(); for (int i = 0; i < n; i++) a.add(supplier.get()); return a; } } public static class Stdout { private PrintWriter stdout; public Stdout(PrintStream stdout) { this.stdout = new PrintWriter(stdout, false); } public void println(Object ... objs) { for (int i = 0, len = objs.length; i < len; i++) { stdout.print(objs[i]); if (i != len-1) stdout.print(' '); } stdout.println(); } public void flush() { stdout.flush(); } } }