結果
問題 | No.240 ナイト散歩 |
ユーザー | wdkkou |
提出日時 | 2019-09-12 18:18:00 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 66 ms / 2,000 ms |
コード長 | 3,225 bytes |
コンパイル時間 | 5,766 ms |
コンパイル使用メモリ | 77,328 KB |
実行使用メモリ | 36,916 KB |
最終ジャッジ日時 | 2024-07-02 17:09:04 |
合計ジャッジ時間 | 8,172 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
(要ログイン)
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
36,880 KB |
testcase_01 | AC | 51 ms
36,704 KB |
testcase_02 | AC | 51 ms
36,784 KB |
testcase_03 | AC | 51 ms
36,768 KB |
testcase_04 | AC | 51 ms
36,912 KB |
testcase_05 | AC | 51 ms
36,612 KB |
testcase_06 | AC | 51 ms
36,828 KB |
testcase_07 | AC | 52 ms
36,620 KB |
testcase_08 | AC | 50 ms
36,380 KB |
testcase_09 | AC | 51 ms
36,500 KB |
testcase_10 | AC | 52 ms
36,640 KB |
testcase_11 | AC | 53 ms
36,712 KB |
testcase_12 | AC | 52 ms
36,916 KB |
testcase_13 | AC | 51 ms
36,656 KB |
testcase_14 | AC | 51 ms
36,644 KB |
testcase_15 | AC | 51 ms
36,736 KB |
testcase_16 | AC | 51 ms
36,688 KB |
testcase_17 | AC | 66 ms
36,792 KB |
testcase_18 | AC | 52 ms
36,568 KB |
testcase_19 | AC | 52 ms
36,552 KB |
testcase_20 | AC | 51 ms
36,536 KB |
testcase_21 | AC | 52 ms
36,704 KB |
testcase_22 | AC | 50 ms
36,608 KB |
testcase_23 | AC | 51 ms
36,668 KB |
testcase_24 | AC | 51 ms
36,532 KB |
testcase_25 | AC | 52 ms
36,600 KB |
testcase_26 | AC | 52 ms
36,452 KB |
testcase_27 | AC | 56 ms
36,748 KB |
testcase_28 | AC | 51 ms
36,684 KB |
testcase_29 | AC | 52 ms
36,748 KB |
testcase_30 | AC | 62 ms
36,464 KB |
testcase_31 | AC | 53 ms
36,632 KB |
testcase_32 | AC | 52 ms
36,712 KB |
testcase_33 | AC | 50 ms
36,632 KB |
ソースコード
import java.util.*; import java.io.*; public class Main { static long[] dx = { -2, -2, -1, -1, 1, 1, 2, 2 }; static long[] dy = { -1, 1, -2, 2, -2, 2, -1, 1 }; static long ex; static long ey; public static void main(String[] args) { FastScanner sc = new FastScanner(); ex = sc.nextLong(); ey = sc.nextLong(); if (dfs(0, 0, 0)) { System.out.println("YES"); return; } System.out.println("NO"); } public static boolean dfs(long x, long y, int cnt) { // System.out.printf("x = %d , y = %d ,cnt = %d %n", x, y, cnt); if (x == ex && y == ey) { return true; } if (cnt >= 3) { return false; } for (int i = 0; i < 8; i++) { long nx = x + dx[i]; long ny = y + dy[i]; if (dfs(nx, ny, cnt + 1)) { return true; } } return false; } } class FastScanner { private final InputStream in = System.in; private final byte[] buffer = new byte[1024]; private int ptr = 0; private int buflen = 0; private boolean hasNextByte() { if (ptr < buflen) { return true; } else { ptr = 0; try { buflen = in.read(buffer); } catch (IOException e) { e.printStackTrace(); } if (buflen <= 0) { return false; } } return true; } private int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1; } private static boolean isPrintableChar(int c) { return 33 <= c && c <= 126; } public boolean hasNext() { while (hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++; return hasNextByte(); } public String next() { if (!hasNext()) throw new NoSuchElementException(); StringBuilder sb = new StringBuilder(); int b = readByte(); while (isPrintableChar(b)) { sb.appendCodePoint(b); b = readByte(); } return sb.toString(); } public long nextLong() { if (!hasNext()) throw new NoSuchElementException(); long n = 0; boolean minus = false; int b = readByte(); if (b == '-') { minus = true; b = readByte(); } if (b < '0' || '9' < b) { throw new NumberFormatException(); } while (true) { if ('0' <= b && b <= '9') { n *= 10; n += b - '0'; } else if (b == -1 || !isPrintableChar(b)) { return minus ? -n : n; } else { throw new NumberFormatException(); } b = readByte(); } } public int nextInt() { long nl = nextLong(); if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException(); return (int) nl; } public double nextDouble() { return Double.parseDouble(next()); } }