結果
問題 | No.1995 CHIKA Road |
ユーザー | tenten |
提出日時 | 2024-04-30 10:53:55 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 1,094 ms / 2,000 ms |
コード長 | 3,011 bytes |
コンパイル時間 | 2,262 ms |
コンパイル使用メモリ | 80,456 KB |
実行使用メモリ | 110,728 KB |
最終ジャッジ日時 | 2024-04-30 10:54:24 |
合計ジャッジ時間 | 22,989 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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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 | 45 ms
50,020 KB |
testcase_01 | AC | 46 ms
50,132 KB |
testcase_02 | AC | 47 ms
50,344 KB |
testcase_03 | AC | 47 ms
50,164 KB |
testcase_04 | AC | 48 ms
50,552 KB |
testcase_05 | AC | 54 ms
50,504 KB |
testcase_06 | AC | 230 ms
56,192 KB |
testcase_07 | AC | 365 ms
65,316 KB |
testcase_08 | AC | 70 ms
50,544 KB |
testcase_09 | AC | 54 ms
50,252 KB |
testcase_10 | AC | 414 ms
63,240 KB |
testcase_11 | AC | 1,094 ms
110,728 KB |
testcase_12 | AC | 802 ms
82,476 KB |
testcase_13 | AC | 535 ms
76,120 KB |
testcase_14 | AC | 555 ms
76,124 KB |
testcase_15 | AC | 1,051 ms
104,172 KB |
testcase_16 | AC | 263 ms
62,032 KB |
testcase_17 | AC | 609 ms
77,468 KB |
testcase_18 | AC | 933 ms
96,776 KB |
testcase_19 | AC | 916 ms
96,912 KB |
testcase_20 | AC | 573 ms
76,028 KB |
testcase_21 | AC | 523 ms
76,232 KB |
testcase_22 | AC | 892 ms
86,604 KB |
testcase_23 | AC | 384 ms
65,336 KB |
testcase_24 | AC | 799 ms
84,980 KB |
testcase_25 | AC | 297 ms
61,868 KB |
testcase_26 | AC | 421 ms
66,752 KB |
testcase_27 | AC | 798 ms
81,588 KB |
testcase_28 | AC | 547 ms
72,892 KB |
testcase_29 | AC | 884 ms
89,352 KB |
testcase_30 | AC | 281 ms
62,328 KB |
testcase_31 | AC | 208 ms
56,056 KB |
testcase_32 | AC | 324 ms
63,772 KB |
testcase_33 | AC | 765 ms
80,620 KB |
testcase_34 | AC | 214 ms
56,840 KB |
testcase_35 | AC | 423 ms
66,180 KB |
testcase_36 | AC | 458 ms
66,804 KB |
testcase_37 | AC | 881 ms
83,944 KB |
testcase_38 | AC | 629 ms
81,868 KB |
testcase_39 | AC | 201 ms
56,292 KB |
ソースコード
import java.io.*; import java.util.*; import java.util.function.*; 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(); TreeMap<Integer, Integer> compress = new TreeMap<>(); int[] lefts = new int[m]; int[] rights = new int[m]; compress.put(1, null); compress.put(n, null); for (int i = 0; i < m; i++) { lefts[i] = sc.nextInt(); rights[i] = sc.nextInt(); compress.put(lefts[i], null); compress.put(rights[i], null); } List<List<Path>> graph = new ArrayList<>(); for (int i = 0; i < compress.size(); i++) { graph.add(new ArrayList<>()); } int prev = -1; int idx = 0; for (int x : compress.keySet()) { compress.put(x, idx); if (prev >= 1) { graph.get(idx - 1).add(new Path(idx, (x - prev) * 2)); } idx++; prev = x; } for (int i = 0; i < m; i++) { graph.get(compress.get(lefts[i])).add(new Path(compress.get(rights[i]), (rights[i] - lefts[i]) * 2 - 1)); } int[] costs = new int[idx]; Arrays.fill(costs, Integer.MAX_VALUE); PriorityQueue<Path> queue = new PriorityQueue<>(); queue.add(new Path(0, 0)); while (queue.size() > 0) { Path p = queue.poll(); if (costs[p.idx] <= p.value) { continue; } costs[p.idx] = p.value; for (Path x : graph.get(p.idx)) { queue.add(new Path(x.idx, x.value + p.value)); } } System.out.println(costs[idx - 1]); } static class Path implements Comparable<Path> { int idx; int value; public Path(int idx, int value) { this.idx = idx; this.value = value; } public int compareTo(Path another) { return value - another.value; } } } class Scanner { BufferedReader br; StringTokenizer st = new StringTokenizer(""); StringBuilder sb = new StringBuilder(); public Scanner() { try { br = new BufferedReader(new InputStreamReader(System.in)); } catch (Exception e) { } } public int nextInt() { return Integer.parseInt(next()); } public long nextLong() { return Long.parseLong(next()); } public double nextDouble() { return Double.parseDouble(next()); } public String next() { try { while (!st.hasMoreTokens()) { st = new StringTokenizer(br.readLine()); } } catch (Exception e) { e.printStackTrace(); } finally { return st.nextToken(); } } }