結果
問題 | No.17 2つの地点に泊まりたい |
ユーザー | fujisu |
提出日時 | 2015-02-07 07:45:59 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 115 ms / 5,000 ms |
コード長 | 3,731 bytes |
コンパイル時間 | 2,500 ms |
コンパイル使用メモリ | 80,152 KB |
実行使用メモリ | 39,700 KB |
最終ジャッジ日時 | 2024-10-15 01:19:46 |
合計ジャッジ時間 | 5,159 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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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 | 49 ms
36,884 KB |
testcase_01 | AC | 52 ms
36,820 KB |
testcase_02 | AC | 49 ms
36,796 KB |
testcase_03 | AC | 56 ms
37,104 KB |
testcase_04 | AC | 57 ms
36,748 KB |
testcase_05 | AC | 106 ms
39,052 KB |
testcase_06 | AC | 99 ms
38,656 KB |
testcase_07 | AC | 84 ms
37,820 KB |
testcase_08 | AC | 112 ms
39,700 KB |
testcase_09 | AC | 115 ms
39,440 KB |
testcase_10 | AC | 67 ms
37,872 KB |
testcase_11 | AC | 86 ms
38,064 KB |
testcase_12 | AC | 51 ms
36,920 KB |
testcase_13 | AC | 50 ms
36,976 KB |
testcase_14 | AC | 50 ms
36,848 KB |
testcase_15 | AC | 49 ms
36,436 KB |
testcase_16 | AC | 50 ms
37,132 KB |
testcase_17 | AC | 51 ms
37,144 KB |
testcase_18 | AC | 56 ms
37,180 KB |
testcase_19 | AC | 52 ms
37,132 KB |
testcase_20 | AC | 50 ms
37,140 KB |
testcase_21 | AC | 50 ms
36,848 KB |
testcase_22 | AC | 54 ms
36,948 KB |
testcase_23 | AC | 104 ms
39,144 KB |
testcase_24 | AC | 83 ms
38,780 KB |
testcase_25 | AC | 51 ms
37,180 KB |
testcase_26 | AC | 111 ms
39,148 KB |
ソースコード
import java.io.IOException; import java.util.InputMismatchException; import java.util.LinkedList; import java.util.List; import java.util.PriorityQueue; public class Main { int n, m; List<Integer>[] e; int[][] g; int[] cost; class D implements Comparable<D> { int pos; int pre; int min; D(int pos, int pre, int min) { this.pos = pos; this.pre = pre; this.min = min; } @Override public int compareTo(D o) { if (this.min != o.min) { return this.min - o.min; } if (this.pos != o.pos) { return this.pos - o.pos; } if (this.pre != o.pre) { return this.pre - o.pre; } return 0; } } int dijkstra() { PriorityQueue<D> queue = new PriorityQueue<D>(); queue.add(new D(0, 0, 0)); boolean[][] vis = new boolean[n][n + 1]; while (!queue.isEmpty()) { D d = queue.poll(); int pos = d.pos; int pre = d.pre; int min = d.min; if (pos == n - 1 && pre == n) { return min; } if (vis[pos][pre]) { continue; } vis[pos][pre] = true; for (Integer to : e[pos]) { queue.add(new D(to, pre, min + g[pos][to])); } if (0 < pos && pos < n - 1 && pos != pre && pre < n) { if (pre == 0) { queue.add(new D(pos, pos, min + cost[pos])); } else { queue.add(new D(pos, n, min + cost[pos])); } } } return -1; } void run() { MyScanner sc = new MyScanner(); n = sc.nextInt(); cost = sc.nextIntArray(n); m = sc.nextInt(); e = new LinkedList[n]; for (int i = 0; i < n; i++) { e[i] = new LinkedList<Integer>(); } g = new int[n][n]; for (int i = 0; i < m; i++) { int a = sc.nextInt(); int b = sc.nextInt(); int c = sc.nextInt(); g[a][b] = g[b][a] = c; e[a].add(b); e[b].add(a); } System.out.println(dijkstra()); } public static void main(String[] args) { new Main().run(); } public void mapDebug(int[][] a) { System.out.println("--------map display---------"); for (int i = 0; i < a.length; i++) { for (int j = 0; j < a[i].length; j++) { System.out.printf("%3d ", a[i][j]); } System.out.println(); } System.out.println("----------------------------" + '\n'); } class MyScanner { int read() { try { return System.in.read(); } catch (IOException e) { throw new InputMismatchException(); } } boolean isSpaceChar(int c) { return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1; } boolean isEndline(int c) { return c == '\n' || c == '\r' || c == -1; } int nextInt() { return Integer.parseInt(next()); } int[] nextIntArray(int n) { int[] array = new int[n]; for (int i = 0; i < n; i++) array[i] = nextInt(); return array; } long nextLong() { return Long.parseLong(next()); } long[] nextLongArray(int n) { long[] array = new long[n]; for (int i = 0; i < n; i++) array[i] = nextLong(); return array; } double nextDouble() { return Double.parseDouble(next()); } double[] nextDoubleArray(int n) { double[] array = new double[n]; for (int i = 0; i < n; i++) array[i] = nextDouble(); return array; } String next() { int c = read(); while (isSpaceChar(c)) c = read(); StringBuilder res = new StringBuilder(); do { res.appendCodePoint(c); c = read(); } while (!isSpaceChar(c)); return res.toString(); } String[] nextStringArray(int n) { String[] array = new String[n]; for (int i = 0; i < n; i++) array[i] = next(); return array; } String nextLine() { int c = read(); while (isEndline(c)) c = read(); StringBuilder res = new StringBuilder(); do { res.appendCodePoint(c); c = read(); } while (!isEndline(c)); return res.toString(); } } }