結果
問題 | No.240 ナイト散歩 |
ユーザー | nCk_cv |
提出日時 | 2016-07-13 16:05:14 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 51 ms / 2,000 ms |
コード長 | 3,572 bytes |
コンパイル時間 | 2,332 ms |
コンパイル使用メモリ | 78,144 KB |
実行使用メモリ | 50,220 KB |
最終ジャッジ日時 | 2024-10-07 21:27:05 |
合計ジャッジ時間 | 4,669 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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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 | 47 ms
49,812 KB |
testcase_01 | AC | 47 ms
49,736 KB |
testcase_02 | AC | 48 ms
49,752 KB |
testcase_03 | AC | 48 ms
50,040 KB |
testcase_04 | AC | 48 ms
50,012 KB |
testcase_05 | AC | 47 ms
49,664 KB |
testcase_06 | AC | 48 ms
50,108 KB |
testcase_07 | AC | 47 ms
50,100 KB |
testcase_08 | AC | 47 ms
50,084 KB |
testcase_09 | AC | 48 ms
49,760 KB |
testcase_10 | AC | 48 ms
50,140 KB |
testcase_11 | AC | 47 ms
50,144 KB |
testcase_12 | AC | 51 ms
49,928 KB |
testcase_13 | AC | 50 ms
49,888 KB |
testcase_14 | AC | 50 ms
50,068 KB |
testcase_15 | AC | 51 ms
50,156 KB |
testcase_16 | AC | 49 ms
50,060 KB |
testcase_17 | AC | 49 ms
50,128 KB |
testcase_18 | AC | 51 ms
50,124 KB |
testcase_19 | AC | 51 ms
50,160 KB |
testcase_20 | AC | 50 ms
50,124 KB |
testcase_21 | AC | 48 ms
49,768 KB |
testcase_22 | AC | 47 ms
50,052 KB |
testcase_23 | AC | 50 ms
50,036 KB |
testcase_24 | AC | 50 ms
50,152 KB |
testcase_25 | AC | 49 ms
49,904 KB |
testcase_26 | AC | 51 ms
49,972 KB |
testcase_27 | AC | 51 ms
50,028 KB |
testcase_28 | AC | 48 ms
50,220 KB |
testcase_29 | AC | 47 ms
50,120 KB |
testcase_30 | AC | 49 ms
49,860 KB |
testcase_31 | AC | 48 ms
50,076 KB |
testcase_32 | AC | 51 ms
49,804 KB |
testcase_33 | AC | 48 ms
50,148 KB |
ソースコード
import java.io.*; import java.math.*; import java.util.*; import java.util.Map.Entry; class Main { static int[] vy = {1,0,-1,0}; static int[] vx = {0,1,0,-1}; static long mod = 1000000007; static int[][] v = {{-2,-1},{-2,+1},{-1,-2},{-1,+2},{+1,-2},{+1,+2},{+2,-1},{+2,+1}}; static HashMap<String,Boolean> map = new HashMap<String,Boolean>(); public static void main(String[] args) { FastScanner sc = new FastScanner(); //Scanner sc = new Scanner(System.in); int X = sc.nextInt(); int Y = sc.nextInt(); boolean ok = dfs(0,0,X,Y,0); if(ok) System.out.println("YES"); else System.out.println("NO"); } static boolean dfs(int x, int y, int GX, int GY, int c) { if(x == GX && y == GY) return true; if(c == 3) return false; for(int i = 0; i < v.length; i++) { int tx = x + v[i][0]; int ty = y + v[i][1]; if(dfs(tx,ty,GX,GY,c+1)) return true; } return false; } static 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;} private void skipUnprintable() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++;} public boolean hasNext() { skipUnprintable(); 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() { if (!hasNext()) throw new NoSuchElementException(); int 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(); } } } }