結果
問題 | No.1995 CHIKA Road |
ユーザー | tenten |
提出日時 | 2022-07-28 13:26:08 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 1,145 ms / 2,000 ms |
コード長 | 2,861 bytes |
コンパイル時間 | 2,195 ms |
コンパイル使用メモリ | 80,108 KB |
実行使用メモリ | 109,988 KB |
最終ジャッジ日時 | 2024-07-18 04:19:45 |
合計ジャッジ時間 | 23,407 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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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 | 54 ms
50,480 KB |
testcase_01 | AC | 51 ms
50,480 KB |
testcase_02 | AC | 52 ms
50,436 KB |
testcase_03 | AC | 53 ms
50,428 KB |
testcase_04 | AC | 52 ms
50,532 KB |
testcase_05 | AC | 59 ms
50,524 KB |
testcase_06 | AC | 224 ms
57,480 KB |
testcase_07 | AC | 384 ms
66,184 KB |
testcase_08 | AC | 62 ms
50,516 KB |
testcase_09 | AC | 57 ms
51,356 KB |
testcase_10 | AC | 415 ms
63,224 KB |
testcase_11 | AC | 1,145 ms
109,988 KB |
testcase_12 | AC | 800 ms
86,184 KB |
testcase_13 | AC | 588 ms
76,596 KB |
testcase_14 | AC | 559 ms
76,296 KB |
testcase_15 | AC | 993 ms
106,908 KB |
testcase_16 | AC | 285 ms
62,388 KB |
testcase_17 | AC | 634 ms
81,772 KB |
testcase_18 | AC | 892 ms
89,248 KB |
testcase_19 | AC | 889 ms
89,524 KB |
testcase_20 | AC | 584 ms
75,832 KB |
testcase_21 | AC | 538 ms
76,156 KB |
testcase_22 | AC | 898 ms
97,332 KB |
testcase_23 | AC | 413 ms
66,352 KB |
testcase_24 | AC | 809 ms
84,884 KB |
testcase_25 | AC | 304 ms
62,024 KB |
testcase_26 | AC | 427 ms
66,976 KB |
testcase_27 | AC | 797 ms
84,956 KB |
testcase_28 | AC | 583 ms
76,244 KB |
testcase_29 | AC | 931 ms
88,872 KB |
testcase_30 | AC | 319 ms
62,240 KB |
testcase_31 | AC | 223 ms
56,756 KB |
testcase_32 | AC | 327 ms
64,288 KB |
testcase_33 | AC | 750 ms
84,672 KB |
testcase_34 | AC | 225 ms
56,808 KB |
testcase_35 | AC | 442 ms
66,564 KB |
testcase_36 | AC | 493 ms
71,052 KB |
testcase_37 | AC | 874 ms
86,276 KB |
testcase_38 | AC | 660 ms
80,500 KB |
testcase_39 | AC | 213 ms
56,340 KB |
ソースコード
import java.io.*; import java.util.*; public class Main { public static void main(String[] args) throws Exception { Scanner sc = new Scanner(); int n = sc.nextInt(); int m = sc.nextInt(); int[] lefts = new int[m]; int[] rights = new int[m]; TreeMap<Integer, Integer> compress = new TreeMap<>(); for (int i = 0; i < m; i++) { lefts[i] = sc.nextInt(); compress.put(lefts[i], null); rights[i] = sc.nextInt(); compress.put(rights[i], null); } compress.put(1, null); compress.put(n, null); int idx = 0; ArrayList<Integer> distance = new ArrayList<>(); int prev = -1; for (int x : compress.keySet()) { compress.put(x, idx++); distance.add(x - prev); prev = x; } ArrayList<ArrayList<Path>> graph = new ArrayList<>(); for (int i = 0; i < idx; i++) { graph.add(new ArrayList<>()); if (i > 0) { graph.get(i - 1).add(new Path(i, distance.get(i) * 2)); } } for (int i = 0; i < m; i++) { graph.get(compress.get(lefts[i])).add(new Path(compress.get(rights[i]), 2 * (rights[i] - lefts[i]) - 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 = new BufferedReader(new InputStreamReader(System.in)); StringTokenizer st = new StringTokenizer(""); 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 String next() throws Exception { while (!st.hasMoreTokens()) { st = new StringTokenizer(br.readLine()); } return st.nextToken(); } }