結果
問題 | No.848 なかよし旅行 |
ユーザー |
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提出日時 | 2023-04-24 15:53:32 |
言語 | Java (openjdk 23) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,582 bytes |
コンパイル時間 | 2,816 ms |
コンパイル使用メモリ | 95,956 KB |
実行使用メモリ | 63,972 KB |
最終ジャッジ日時 | 2024-11-08 17:13:02 |
合計ジャッジ時間 | 14,133 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 7 WA * 19 |
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 m = sc.nextInt(); int[] bases = new int[]{0, sc.nextInt() - 1, sc.nextInt() - 1}; int t = sc.nextInt(); ArrayList<ArrayList<Path>> graph = new ArrayList<>(); for (int i = 0; i < n; i++) { graph.add(new ArrayList<>()); } for (int i = 0; i < m; i++) { int a = sc.nextInt() - 1; int b = sc.nextInt() - 1; int c = sc.nextInt(); graph.get(a).add(new Path(b, c)); graph.get(b).add(new Path(a, c)); } long[][] costs = new long[3][n]; PriorityQueue<Path> queue = new PriorityQueue<>(); for (int i = 0; i < 3; i++) { queue.add(new Path(bases[i], 0)); Arrays.fill(costs[i], Long.MAX_VALUE); while (queue.size() > 0) { Path p = queue.poll(); if (costs[i][p.idx] <= p.value) { continue; } costs[i][p.idx] = p.value; for (Path x : graph.get(p.idx)) { queue.add(new Path(x.idx, x.value + p.value)); } } } long tmp = 0; for (int i = 0; i < 3; i++) { tmp += costs[i][bases[(i + 1) % 3]]; } if (tmp <= t) { System.out.println(t); return; } long ans = -1; for (int i = 0; i < n; i++) { long separate = Math.max(costs[1][i], costs[2][i]); if (t >= separate * 2 + costs[0][i] * 2) { ans = Math.max(ans, t - separate * 2); } } System.out.println(ans); } static class Path implements Comparable<Path> { int idx; long value; public Path(int idx, long value) { this.idx = idx; this.value = value; } public int compareTo(Path another) { if (value == another.value) { return 0; } else if (value < another.value) { return -1; } else { return 1; } } } } 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(); } }