結果

問題 No.648 　お　や　す　み　
ユーザー GoryudyumaGoryudyuma
提出日時 2018-05-02 18:46:59
言語 Scala(Beta)
(3.4.0)
結果
AC  
実行時間 973 ms / 2,000 ms
コード長 1,763 bytes
コンパイル時間 12,726 ms
コンパイル使用メモリ 255,372 KB
実行使用メモリ 63,572 KB
最終ジャッジ日時 2023-09-12 18:50:05
合計ジャッジ時間 95,849 ms
ジャッジサーバーID
（参考情報） 		judge12 / judge14
このコードへのチャレンジ
（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 925 ms
63,488 KB
testcase_01 AC 929 ms
62,792 KB
testcase_02 AC 916 ms
62,876 KB
testcase_03 AC 929 ms
62,504 KB
testcase_04 AC 925 ms
62,552 KB
testcase_05 AC 913 ms
62,824 KB
testcase_06 AC 920 ms
62,608 KB
testcase_07 AC 924 ms
62,732 KB
testcase_08 AC 919 ms
62,588 KB
testcase_09 AC 915 ms
62,528 KB
testcase_10 AC 927 ms
62,880 KB
testcase_11 AC 915 ms
62,668 KB
testcase_12 AC 916 ms
62,488 KB
testcase_13 AC 920 ms
62,440 KB
testcase_14 AC 934 ms
62,652 KB
testcase_15 AC 926 ms
62,444 KB
testcase_16 AC 931 ms
62,736 KB
testcase_17 AC 926 ms
62,728 KB
testcase_18 AC 926 ms
62,636 KB
testcase_19 AC 925 ms
62,500 KB
testcase_20 AC 925 ms
62,648 KB
testcase_21 AC 926 ms
62,772 KB
testcase_22 AC 931 ms
62,428 KB
testcase_23 AC 918 ms
62,588 KB
testcase_24 AC 918 ms
62,400 KB
testcase_25 AC 918 ms
62,960 KB
testcase_26 AC 932 ms
62,824 KB
testcase_27 AC 925 ms
62,924 KB
testcase_28 AC 921 ms
62,492 KB
testcase_29 AC 924 ms
62,532 KB
testcase_30 AC 923 ms
62,624 KB
testcase_31 AC 925 ms
62,620 KB
testcase_32 AC 924 ms
62,672 KB
testcase_33 AC 922 ms
62,544 KB
testcase_34 AC 923 ms
62,504 KB
testcase_35 AC 925 ms
62,528 KB
testcase_36 AC 920 ms
62,476 KB
testcase_37 AC 926 ms
62,988 KB
testcase_38 AC 924 ms
62,512 KB
testcase_39 AC 923 ms
62,808 KB
testcase_40 AC 926 ms
62,560 KB
testcase_41 AC 927 ms
62,584 KB
testcase_42 AC 925 ms
62,908 KB
testcase_43 AC 933 ms
62,424 KB
testcase_44 AC 929 ms
62,400 KB
testcase_45 AC 931 ms
62,604 KB
testcase_46 AC 927 ms
62,604 KB
testcase_47 AC 921 ms
62,452 KB
testcase_48 AC 918 ms
62,744 KB
testcase_49 AC 970 ms
62,480 KB
testcase_50 AC 913 ms
62,680 KB
testcase_51 AC 921 ms
62,740 KB
testcase_52 AC 929 ms
63,468 KB
testcase_53 AC 919 ms
62,560 KB
testcase_54 AC 918 ms
62,592 KB
testcase_55 AC 973 ms
62,592 KB
testcase_56 AC 924 ms
62,528 KB
testcase_57 AC 937 ms
62,392 KB
testcase_58 AC 940 ms
63,572 KB
testcase_59 AC 938 ms
62,536 KB
testcase_60 AC 938 ms
62,572 KB
testcase_61 AC 936 ms
62,468 KB
testcase_62 AC 952 ms
62,560 KB
testcase_63 AC 927 ms
62,548 KB
testcase_64 AC 918 ms
62,580 KB
testcase_65 AC 923 ms
62,916 KB
testcase_66 AC 927 ms
62,900 KB
testcase_67 AC 927 ms
62,596 KB
testcase_68 AC 934 ms
62,452 KB
testcase_69 AC 924 ms
62,788 KB
testcase_70 AC 936 ms
62,460 KB
testcase_71 AC 924 ms
62,532 KB
testcase_72 AC 924 ms
62,700 KB
testcase_73 AC 923 ms
62,580 KB
testcase_74 AC 939 ms
62,416 KB
testcase_75 AC 959 ms
62,424 KB
testcase_76 AC 959 ms
62,496 KB
testcase_77 AC 955 ms
62,552 KB
testcase_78 AC 928 ms
62,932 KB
testcase_79 AC 910 ms
62,492 KB
testcase_80 AC 928 ms
62,544 KB
testcase_81 AC 920 ms
62,608 KB
testcase_82 AC 923 ms
62,524 KB
testcase_83 AC 922 ms
62,632 KB
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ソースコード

diff # 

import java.util.Scanner

import scala.collection.Searching._
import scala.annotation.tailrec
import scala.collection.mutable
import scala.collection.immutable._
import scala.io.StdIn.readLine

class 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 this

    val root1 = root(t1)
    val root2 = root(t2)
    if (root1 == root2) return this

    val 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)

  def root(t: Int): Int = nodes(t).parent match {
    case None => t
    case Some(p) => root(p)
  }
}

object Main {
  def solve(sc: => Scanner): Unit = {
    val N = sc.nextLong
    val ans = solve2(0, 1L << 32, N)
    if (ans._1) {
      println("YES")
      println(ans._2)
    } else {
      println("NO")
    }
  }

  def solve2(minV: Long, maxV: Long, N: Long): (Boolean, Long) = {
    if (minV + 2 > maxV) {
      (calc(minV) == N, minV)
    } else {
      val midV = (minV + maxV) / 2
      if (calc(midV) <= N) {
        solve2(midV, maxV, N)
      } else {
        solve2(minV, midV, N)
      }
    }
  }

  def calc(v: Long): Long = (v + 1) * v / 2

  def gcd(i: Long, j: Long): Long = {
    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)
  }
}
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