結果
| 問題 | No.240 ナイト散歩 |
| ユーザー |
 しらっ亭
|
| 提出日時 | 2015-10-02 17:35:26 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 56 ms / 2,000 ms |
| コード長 | 5,806 bytes |
| コンパイル時間 | 4,103 ms |
| コンパイル使用メモリ | 90,892 KB |
| 実行使用メモリ | 50,584 KB |
| 最終ジャッジ日時 | 2024-10-07 21:12:51 |
| 合計ジャッジ時間 | 5,718 ms |
|
ジャッジサーバーID （参考情報） |
judge5 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 30 |
ソースコード
package problems303;import java.io.BufferedOutputStream;import java.io.BufferedReader;import java.io.ByteArrayOutputStream;import java.io.IOException;import java.io.InputStreamReader;import java.io.PrintStream;import java.io.StringReader;import java.util.ArrayList;import java.util.Arrays;import java.util.List;public class Main {List<int[]> ps = new ArrayList<>();int[] dxs = {-2, -2, -1, -1, +1, +1, +2, +2};int[] dys = {-1, +1, -2, +2, -2, +2, -1, +1};public void dfs(int x, int y, int depth) {if (depth < 0) {return;}ps.add(new int[]{x, y});for (int i = 0; i < 8; i++) {int dx = dxs[i];int dy = dys[i];dfs(x + dx, y + dy, depth - 1);}}public void run() throws IOException {int X = io.nextInt();int Y = io.nextInt();dfs(0, 0, 3);for (int[] p : ps) {if (p[0] == X && p[1] == Y) {System.out.println("YES");return;}}System.out.println("NO");}// @formatter:offprivate static final int mod = (int) 1e9 + 7;final IOFast io = new IOFast();void main() throws IOException { try { run(); } catch (RuntimeException ignore) { } finally { System.out.flush(); } }public static void main(String[] args) throws IOException { new Main().main(); }public static String dtos(double x, int n) {StringBuilder sb = new StringBuilder();if (x < 0) {sb.append('-');x = -x;}x += Math.pow(10, -n) / 2;sb.append((long) x);sb.append(".");x -= (long) x;for (int i = 0; i < n; i++) {x *= 10;sb.append((int) x);x -= (int) x;}return sb.toString();}public static class IOFast {private BufferedReader in = new BufferedReader(new InputStreamReader(System.in));void setStringIn(String input) throws IOException {in.close();in = new BufferedReader(new StringReader(input));}void setStringOut(ByteArrayOutputStream output) throws IOException { System.out.flush(); System.setOut(new PrintStream(output)); }void setStringIO(String input, ByteArrayOutputStream output) throws IOException { setStringIn(input); setStringOut(output); }private static int pos, readLen;private static final char[] buffer = new char[1024 * 8];private static char[] str = new char[500*8*2];private static boolean[] isDigit = new boolean[256];private static boolean[] isSpace = new boolean[256];private static boolean[] isLineSep = new boolean[256];static {System.setOut(new PrintStream(new BufferedOutputStream(System.out)));for(int i = 0; i < 10; i++) { isDigit['0' + i] = true; } isDigit['-'] = true; isSpace[' '] = isSpace['\r'] = isSpace['\n'] =isSpace['\t'] = true; isLineSep['\r'] = isLineSep['\n'] = true;}public int read() throws IOException { if(pos >= readLen) { pos = 0; readLen = in.read(buffer); if(readLen <= 0) { throw new RuntimeException(); } } return buffer[pos++]; }public int nextInt() throws IOException { int len = 0; str[len++] = nextChar(); len = reads(len, isSpace); int i = 0; int ret = 0; if(str[0]== '-') { i = 1; } for(; i < len; i++) ret = ret * 10 + str[i] - '0'; if(str[0] == '-') { ret = -ret; } return ret; }public long nextLong() throws IOException { int len = 0; str[len++] = nextChar(); len = reads(len, isSpace); int i = 0; long ret = 0; if(str[0] == '-') { i = 1; } for(; i < len; i++) ret = ret * 10 + str[i] - '0'; if(str[0] == '-') { ret = -ret; } return ret; }public char nextChar() throws IOException { while(true) { final int c = read(); if(!isSpace[c]) { return (char)c; } } }int reads(int len, boolean[] accept) throws IOException { try { while(true) { final int c = read(); if(accept[c]) { break; } if(str.length ==len) { char[] rep = new char[str.length * 3 / 2]; System.arraycopy(str, 0, rep, 0, str.length); str = rep; } str[len++] = (char)c; } }catch(RuntimeException e) { ; } return len; }public char[] nextLine() throws IOException { int len = 0; str[len++] = nextChar(); len = reads(len, isLineSep); try { if(str[len-1] == '\r'){ len--; read(); } } catch(RuntimeException e) { ; } return Arrays.copyOf(str, len); }public String nextString() throws IOException { return new String(next()); }public char[] next() throws IOException { int len = 0; str[len++] = nextChar(); len = reads(len, isSpace); return Arrays.copyOf(str, len); }public double nextDouble() throws IOException { return Double.parseDouble(nextString()); }public long[] nextLongArray(final int n) throws IOException { final long[] res = new long[n]; for(int i = 0; i < n; i++) { res[i] = nextLong(); } return res; }public int[] nextIntArray(final int n) throws IOException { final int[] res = new int[n]; for(int i = 0; i < n; i++) { res[i] = nextInt(); }return res; }public int[][] nextIntArray2D(final int n, final int k) throws IOException { final int[][] res = new int[n][]; for(int i = 0; i < n; i++) {res[i] = nextIntArray(k); } return res; }public int[][] nextIntArray2DWithIndex(final int n, final int k) throws IOException { final int[][] res = new int[n][k+1]; for(int i = 0; i <n; i++) { for(int j = 0; j < k; j++) { res[i][j] = nextInt(); } res[i][k] = i; } return res; }public double[] nextDoubleArray(final int n) throws IOException { final double[] res = new double[n]; for(int i = 0; i < n; i++) { res[i] =nextDouble(); } return res; }}// @formatter:on}