結果
問題 | No.240 ナイト散歩 |
ユーザー |
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提出日時 | 2017-01-15 02:29:27 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 56 ms / 2,000 ms |
コード長 | 2,600 bytes |
コンパイル時間 | 2,343 ms |
コンパイル使用メモリ | 77,972 KB |
実行使用メモリ | 50,500 KB |
最終ジャッジ日時 | 2024-10-07 21:34:14 |
合計ジャッジ時間 | 5,276 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
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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
import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.io.PrintWriter;import java.util.*;public class Main {boolean[][] can = new boolean[20][20];void solve() throws IOException {int x = ni() + 10;int y = ni() + 10;if (x < 0 || x >= 20 || y < 0 || y >= 20) {out.println("NO");} else {dfs(10, 10, 3);out.println(can[x][y] ? "YES" : "NO");}}int[] dx = {2, 1, -1, -2, -2, -1, 1, 2};int[] dy = {1, 2, 2, 1, -1, -2, -2, -1};void dfs(int x, int y, int m) {can[x][y] = true;if (m > 0) {for (int i = 0; i < 8; i++) {dfs(x + dx[i], y + dy[i], m - 1);}}}String ns() throws IOException {while (!tok.hasMoreTokens()) {tok = new StringTokenizer(in.readLine(), " ");}return tok.nextToken();}int ni() throws IOException {return Integer.parseInt(ns());}long nl() throws IOException {return Long.parseLong(ns());}double nd() throws IOException {return Double.parseDouble(ns());}String[] nsa(int n) throws IOException {String[] res = new String[n];for (int i = 0; i < n; i++) {res[i] = ns();}return res;}int[] nia(int n) throws IOException {int[] res = new int[n];for (int i = 0; i < n; i++) {res[i] = ni();}return res;}long[] nla(int n) throws IOException {long[] res = new long[n];for (int i = 0; i < n; i++) {res[i] = nl();}return res;}class INA {int[][] a;INA(int n, int m) throws IOException {this(n, m, -1);}INA(int n, int m, int t) throws IOException {a = new int[m][n];for (int i = 0; i < n; i++) {for (int j = 0; j < m; j++) {a[j][i] = ni() + t;}}}int[] get(int i) {return a[i - 1];}}static BufferedReader in;static PrintWriter out;static StringTokenizer tok;public static void main(String[] args) throws IOException {in = new BufferedReader(new InputStreamReader(System.in));out = new PrintWriter(System.out);tok = new StringTokenizer("");Main main = new Main();main.solve();out.close();}}