結果
問題 | No.228 ゆきこちゃんの 15 パズル |
ユーザー | uwi |
提出日時 | 2015-06-19 23:26:26 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 56 ms / 5,000 ms |
コード長 | 3,552 bytes |
コンパイル時間 | 3,401 ms |
コンパイル使用メモリ | 88,048 KB |
実行使用メモリ | 52,456 KB |
最終ジャッジ日時 | 2024-07-07 04:18:55 |
合計ジャッジ時間 | 5,093 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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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 | 56 ms
52,008 KB |
testcase_01 | AC | 48 ms
50,172 KB |
testcase_02 | AC | 51 ms
50,164 KB |
testcase_03 | AC | 55 ms
52,324 KB |
testcase_04 | AC | 51 ms
50,184 KB |
testcase_05 | AC | 45 ms
50,208 KB |
testcase_06 | AC | 51 ms
52,276 KB |
testcase_07 | AC | 46 ms
49,816 KB |
testcase_08 | AC | 51 ms
51,872 KB |
testcase_09 | AC | 47 ms
49,644 KB |
testcase_10 | AC | 49 ms
50,164 KB |
testcase_11 | AC | 47 ms
49,876 KB |
testcase_12 | AC | 51 ms
52,280 KB |
testcase_13 | AC | 51 ms
52,024 KB |
testcase_14 | AC | 54 ms
52,280 KB |
testcase_15 | AC | 52 ms
52,456 KB |
testcase_16 | AC | 53 ms
52,156 KB |
testcase_17 | AC | 52 ms
52,356 KB |
testcase_18 | AC | 52 ms
52,192 KB |
testcase_19 | AC | 54 ms
52,236 KB |
ソースコード
package contest; import java.io.ByteArrayInputStream; import java.io.IOException; import java.io.InputStream; import java.io.PrintWriter; import java.util.Arrays; import java.util.InputMismatchException; public class Q247 { InputStream is; PrintWriter out; String INPUT = ""; void solve() { int n = 16; int[] a = na(n); int[] w = new int[16]; for(int i = 0;i < 15;i++){ w[i] = i+1; } out.println(dfs(w, a, 0) ? "Yes" : "No"); } boolean dfs(int[] w, int[] tar, int fl) { if(Arrays.equals(w, tar))return true; for(int i = 0;i < 4;i++){ for(int j = 0;j < 4;j++){ int x = i*4+j; int[] dr = { 1, 0, -1, 0 }; int[] dc = { 0, 1, 0, -1 }; if(w[x] == 0){ for(int k = 0;k < 4;k++){ int nr = i + dr[k], nc = j + dc[k]; if(nr >= 0 && nr < 4 && nc >= 0 && nc < 4 && fl<<~(w[nr*4+nc])>=0){ int nfl = fl | 1<<w[nr*4+nc]; int[] nw = Arrays.copyOf(w, 16); nw[x] = w[nr*4+nc]; nw[nr*4+nc] = 0; if(dfs(nw, tar, nfl))return true; } } break; } } } return false; } void run() throws Exception { is = INPUT.isEmpty() ? System.in : new ByteArrayInputStream(INPUT.getBytes()); out = new PrintWriter(System.out); long s = System.currentTimeMillis(); solve(); out.flush(); if(!INPUT.isEmpty())tr(System.currentTimeMillis()-s+"ms"); } public static void main(String[] args) throws Exception { new Q247().run(); } private byte[] inbuf = new byte[1024]; private int lenbuf = 0, ptrbuf = 0; private int readByte() { if(lenbuf == -1)throw new InputMismatchException(); if(ptrbuf >= lenbuf){ ptrbuf = 0; try { lenbuf = is.read(inbuf); } catch (IOException e) { throw new InputMismatchException(); } if(lenbuf <= 0)return -1; } return inbuf[ptrbuf++]; } private boolean isSpaceChar(int c) { return !(c >= 33 && c <= 126); } private int skip() { int b; while((b = readByte()) != -1 && isSpaceChar(b)); return b; } private double nd() { return Double.parseDouble(ns()); } private char nc() { return (char)skip(); } private String ns() { int b = skip(); StringBuilder sb = new StringBuilder(); while(!(isSpaceChar(b))){ // when nextLine, (isSpaceChar(b) && b != ' ') sb.appendCodePoint(b); b = readByte(); } return sb.toString(); } private char[] ns(int n) { char[] buf = new char[n]; int b = skip(), p = 0; while(p < n && !(isSpaceChar(b))){ buf[p++] = (char)b; b = readByte(); } return n == p ? buf : Arrays.copyOf(buf, p); } private char[][] nm(int n, int m) { char[][] map = new char[n][]; for(int i = 0;i < n;i++)map[i] = ns(m); return map; } private int[] na(int n) { int[] a = new int[n]; for(int i = 0;i < n;i++)a[i] = ni(); return a; } private int ni() { int num = 0, b; boolean minus = false; while((b = readByte()) != -1 && !((b >= '0' && b <= '9') || b == '-')); if(b == '-'){ minus = true; b = readByte(); } while(true){ if(b >= '0' && b <= '9'){ num = num * 10 + (b - '0'); }else{ return minus ? -num : num; } b = readByte(); } } private long nl() { long num = 0; int b; boolean minus = false; while((b = readByte()) != -1 && !((b >= '0' && b <= '9') || b == '-')); if(b == '-'){ minus = true; b = readByte(); } while(true){ if(b >= '0' && b <= '9'){ num = num * 10 + (b - '0'); }else{ return minus ? -num : num; } b = readByte(); } } private static void tr(Object... o) { System.out.println(Arrays.deepToString(o)); } }