結果
問題 | No.13 囲みたい! |
ユーザー | fujisu |
提出日時 | 2015-02-04 04:59:05 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 667 ms / 5,000 ms |
コード長 | 3,405 bytes |
コンパイル時間 | 2,181 ms |
コンパイル使用メモリ | 85,492 KB |
実行使用メモリ | 60,256 KB |
最終ジャッジ日時 | 2024-10-13 10:40:42 |
合計ジャッジ時間 | 5,411 ms |
ジャッジサーバーID (参考情報) |
judge4 / 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 | 52 ms
50,164 KB |
testcase_01 | AC | 53 ms
49,884 KB |
testcase_02 | AC | 53 ms
50,192 KB |
testcase_03 | AC | 252 ms
59,216 KB |
testcase_04 | AC | 142 ms
54,064 KB |
testcase_05 | AC | 667 ms
60,256 KB |
testcase_06 | AC | 149 ms
55,260 KB |
testcase_07 | AC | 191 ms
55,744 KB |
testcase_08 | AC | 212 ms
57,436 KB |
testcase_09 | AC | 137 ms
54,220 KB |
testcase_10 | AC | 102 ms
51,748 KB |
testcase_11 | AC | 158 ms
52,624 KB |
testcase_12 | AC | 67 ms
50,636 KB |
testcase_13 | AC | 117 ms
52,088 KB |
testcase_14 | AC | 121 ms
51,732 KB |
testcase_15 | AC | 53 ms
49,860 KB |
ソースコード
import java.io.IOException; import java.util.Arrays; import java.util.InputMismatchException; import java.util.LinkedList; import java.util.List; public class Main { List<Integer>[] e; boolean[] visit; boolean dfs(int pre, int k) { if (visit[k]) { return true; } visit[k] = true; for (Integer to : e[k]) { if (to == pre) { continue; } if (dfs(k, to)) { return true; } } return false; } void run() { MyScanner sc = new MyScanner(); int w = sc.nextInt(); int h = sc.nextInt(); int[][] m = new int[h][w]; for (int i = 0; i < h; i++) { for (int j = 0; j < w; j++) { m[i][j] = sc.nextInt(); } } int[] dx = { -1, 0, 0, 1 }; int[] dy = { 0, -1, 1, 0 }; e = new LinkedList[w * h]; for (int i = 0; i < w * h; i++) { e[i] = new LinkedList<Integer>(); } for (int i = 0; i < h; i++) { for (int j = 0; j < w; j++) { for (int k = 0; k < 4; k++) { int nx = j + dx[k]; int ny = i + dy[k]; if (nx < 0 || w <= nx || ny < 0 || h <= ny) { continue; } if (m[i][j] == m[ny][nx]) { int s = i * w + j; int t = ny * w + nx; e[s].add(t); } } } } boolean f = false; visit = new boolean[w * h]; for (int i = 0; i < h; i++) { for (int j = 0; j < w; j++) { Arrays.fill(visit, false); if (dfs(-1, i * w + j)) { f = true; break; } } } System.out.println(f ? "possible" : "impossible"); } 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(); } } }