結果
問題 | No.38 赤青白ブロック |
ユーザー | fujisu |
提出日時 | 2015-03-07 05:05:08 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 351 ms / 5,000 ms |
コード長 | 3,250 bytes |
コンパイル時間 | 2,142 ms |
コンパイル使用メモリ | 78,320 KB |
実行使用メモリ | 44,852 KB |
最終ジャッジ日時 | 2024-06-06 02:01:42 |
合計ジャッジ時間 | 5,068 ms |
ジャッジサーバーID (参考情報) |
judge2 / 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 | 50 ms
37,072 KB |
testcase_01 | AC | 188 ms
44,852 KB |
testcase_02 | AC | 66 ms
38,024 KB |
testcase_03 | AC | 50 ms
36,388 KB |
testcase_04 | AC | 49 ms
36,872 KB |
testcase_05 | AC | 47 ms
36,372 KB |
testcase_06 | AC | 89 ms
39,244 KB |
testcase_07 | AC | 81 ms
37,528 KB |
testcase_08 | AC | 49 ms
36,932 KB |
testcase_09 | AC | 99 ms
40,016 KB |
testcase_10 | AC | 47 ms
36,432 KB |
testcase_11 | AC | 48 ms
36,764 KB |
testcase_12 | AC | 48 ms
36,744 KB |
testcase_13 | AC | 48 ms
36,872 KB |
testcase_14 | AC | 48 ms
36,628 KB |
testcase_15 | AC | 54 ms
37,104 KB |
testcase_16 | AC | 108 ms
41,860 KB |
testcase_17 | AC | 52 ms
37,012 KB |
testcase_18 | AC | 84 ms
39,120 KB |
testcase_19 | AC | 91 ms
38,840 KB |
testcase_20 | AC | 60 ms
36,864 KB |
testcase_21 | AC | 51 ms
36,976 KB |
testcase_22 | AC | 351 ms
44,840 KB |
testcase_23 | AC | 49 ms
36,700 KB |
testcase_24 | AC | 83 ms
38,676 KB |
testcase_25 | AC | 51 ms
36,812 KB |
testcase_26 | AC | 54 ms
36,868 KB |
ソースコード
import java.io.IOException; import java.util.InputMismatchException; public class Main { int r, b; char[] c; int ans; void backtrack(int k, boolean[] use, int cnt) { if (ans <= cnt) { return; } if (20 <= k) { if (check(use)) { ans = cnt; } } else { use[k] = true; backtrack(k + 1, use, cnt + 1); use[k] = false; backtrack(k + 1, use, cnt); } } boolean check(boolean[] use) { StringBuilder tmp = new StringBuilder(""); int id = 0; for (int i = 0; i < 30; i++) { if (c[i] == 'W') { tmp = tmp.append(c[i]); } else { if (!use[id]) { tmp = tmp.append(c[i]); } id++; } } char[] nc = tmp.toString().toCharArray(); int n = nc.length; for (int i = 0; i < n; i++) { if (nc[i] == 'R') { if (0 <= i - r && nc[i - r] == 'R') { return false; } if (i + r < n && nc[i + r] == 'R') { return false; } } else if (nc[i] == 'B') { if (0 <= i - b && nc[i - b] == 'B') { return false; } if (i + b < n && nc[i + b] == 'B') { return false; } } } return true; } void run() { MyScanner sc = new MyScanner(); r = sc.nextInt(); b = sc.nextInt(); c = sc.next().toCharArray(); ans = 30; backtrack(0, new boolean[20], 0); System.out.println(30-ans); } 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(); } } }