結果
問題 | No.34 砂漠の行商人 |
ユーザー | fujisu |
提出日時 | 2015-03-06 06:32:21 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 264 ms / 5,000 ms |
コード長 | 3,757 bytes |
コンパイル時間 | 2,258 ms |
コンパイル使用メモリ | 78,812 KB |
実行使用メモリ | 174,860 KB |
最終ジャッジ日時 | 2024-06-28 10:15:35 |
合計ジャッジ時間 | 6,795 ms |
ジャッジサーバーID (参考情報) |
judge4 / 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 | 52 ms
37,084 KB |
testcase_01 | AC | 52 ms
37,200 KB |
testcase_02 | AC | 83 ms
38,772 KB |
testcase_03 | AC | 58 ms
37,192 KB |
testcase_04 | AC | 188 ms
45,832 KB |
testcase_05 | AC | 189 ms
45,700 KB |
testcase_06 | AC | 86 ms
39,100 KB |
testcase_07 | AC | 256 ms
46,704 KB |
testcase_08 | AC | 264 ms
48,680 KB |
testcase_09 | AC | 142 ms
97,816 KB |
testcase_10 | AC | 205 ms
171,308 KB |
testcase_11 | AC | 191 ms
174,860 KB |
testcase_12 | AC | 157 ms
52,452 KB |
testcase_13 | AC | 150 ms
71,644 KB |
testcase_14 | AC | 121 ms
66,608 KB |
testcase_15 | AC | 95 ms
49,320 KB |
testcase_16 | AC | 105 ms
64,352 KB |
testcase_17 | AC | 103 ms
49,380 KB |
testcase_18 | AC | 57 ms
38,504 KB |
testcase_19 | AC | 165 ms
51,312 KB |
testcase_20 | AC | 117 ms
49,228 KB |
testcase_21 | AC | 116 ms
41,076 KB |
testcase_22 | AC | 109 ms
49,056 KB |
testcase_23 | AC | 116 ms
72,872 KB |
testcase_24 | AC | 142 ms
98,584 KB |
testcase_25 | AC | 182 ms
53,952 KB |
ソースコード
import java.io.IOException; import java.util.InputMismatchException; import java.util.LinkedList; import java.util.Queue; public class Main { int n, v; int sx, sy, gx, gy; int[][] g; int max; class D { int x, y; int r; int min; public D(int x, int y, int r, int min) { this.x = x; this.y = y; this.r = r; this.min = min; } } int dijkstra() { Queue<D> queue = new LinkedList<D>(); queue.add(new D(sx, sy, v, 0)); boolean[][][] vis = new boolean[n][n][v + 1]; int[] dx = { 0, -1, 1, 0 }; int[] dy = { -1, 0, 0, 1 }; int res = 1 << 25; while (!queue.isEmpty()) { D d = queue.poll(); int x = d.x; int y = d.y; int r = d.r; int min = d.min; if (vis[x][y][r]) { continue; } vis[x][y][r] = true; if (x == gx && y == gy) { res = Math.min(res, min); continue; } int mhd = Math.abs(gx - x) + Math.abs(gy - y); if (mhd * max < r) { res = Math.min(res, min + mhd); continue; } if (res <= min + mhd) { continue; } for (int i = 0; i < 4; i++) { int nx = x + dx[i]; int ny = y + dy[i]; if (nx < 0 || n <= nx || ny < 0 || n <= ny) { continue; } int nr = r - g[ny][nx]; if (nr <= 0) { continue; } int nmin = min + 1; if (!vis[nx][ny][nr]) { queue.add(new D(nx, ny, nr, nmin)); } } } return res; } void run() { MyScanner sc = new MyScanner(); n = sc.nextInt(); v = sc.nextInt(); sx = sc.nextInt() - 1; sy = sc.nextInt() - 1; gx = sc.nextInt() - 1; gy = sc.nextInt() - 1; g = new int[n][n]; max = 0; for (int i = 0; i < n; i++) { for (int j = 0; j < n; j++) { g[i][j] = sc.nextInt(); max = Math.max(max, g[i][j]); } } int ans = dijkstra(); System.out.println(ans < 100000 ? ans : -1); } 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(); } } }