結果
問題 | No.240 ナイト散歩 |
ユーザー |
|
提出日時 | 2018-02-17 21:28:48 |
言語 | Scala(Beta) (3.6.2) |
結果 |
AC
|
実行時間 | 1,003 ms / 2,000 ms |
コード長 | 1,976 bytes |
コンパイル時間 | 11,119 ms |
コンパイル使用メモリ | 284,216 KB |
実行使用メモリ | 65,932 KB |
最終ジャッジ日時 | 2024-06-30 04:30:30 |
合計ジャッジ時間 | 45,232 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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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.util.Scannerimport scala.collection.Searching._import scala.annotation.tailrecimport scala.collection.immutable.Queueimport scala.collection.mutableimport scala.io.StdIn.readLineclass IUnionFind(val size: Int) {private case class Node(var parent: Option[Int], var treeSize: Int)private val nodes = Array.fill[Node](size)(new Node(None, 1))def union(t1: Int, t2: Int): IUnionFind = {if (t1 == t2) return thisval root1 = root(t1)val root2 = root(t2)if (root1 == root2) return thisval node1 = nodes(root1)val node2 = nodes(root2)if (node1.treeSize < node2.treeSize) {node1.parent = Some(t2)node2.treeSize += node1.treeSize} else {node2.parent = Some(t1)node1.treeSize += node2.treeSize}this}def connected(t1: Int, t2: Int): Boolean = t1 == t2 || root(t1) == root(t2)@tailrecprivate def root(t: Int): Int = nodes(t).parent match {case None => tcase Some(p) => root(p)}}object Main {def solve(sc: => Scanner): Unit = {val X, Y = sc.nextIntvar que = mutable.Queue[(Int, Int)]()que += ((10, 10))val P = Array.fill(20)(Array.fill(20)(-1))P(10)(10) = 0val Q = Array((2, 1), (1, 2), (2, -1), (-1, 2), (-2, 1), (1, -2), (-1, -2), (-2, -1))while (que.size > 0) {val now = que.dequeueif (P(now._1)(now._2) < 3) (for (diff <- Q) {val next = (now._1 + diff._1, now._2 + diff._2)if (P(next._1)(next._2) == -1) {P(next._1)(next._2) = P(now._1)(now._2) + 1que += next}})}println(if (0 <= X + 10 && X + 10 < 20 && 0 <= Y + 10 && Y + 10 < 20 && P(X + 10)(Y + 10) != -1) ("YES") else ("NO"))}def gcd(i: Int, j: Int): Int = {if (i < j) (gcd(j, i)) else (if (j == 0) (i) else (gcd(j, i % j)))}def main(args: Array[String]): Unit = {val sc: Scanner = new Scanner(System.in)solve(sc)}}