Problem:
Score : 300 points

Problem Statement

When l is an odd number, the median of l numbers a_1, a_2, ..., a_l is the (\frac{l+1}{2})-th largest value among a_1, a_2, ..., a_l.

You are given N numbers X_1, X_2, ..., X_N, where N is an even number.
For each i = 1, 2, ..., N, let the median of X_1, X_2, ..., X_N excluding X_i, that is, the median of X_1, X_2, ..., X_{i-1}, X_{i+1}, ..., X_N be B_i.

Find B_i for each i = 1, 2, ..., N.

Constraints

2 \leq N \leq 200000

N is even.

1 \leq X_i \leq 10^9

All values in input are integers.

Input

Input is given from Standard Input in the following format:

N
X_1 X_2 ... X_N

Output

Print N lines.
The i-th line should contain B_i.

Sample Input 1

4
2 4 4 3

Sample Output 1

4
3
3
4

Since the median of X_2, X_3, X_4 is 4, B_1 = 4.

Since the median of X_1, X_3, X_4 is 3, B_2 = 3.

Since the median of X_1, X_2, X_4 is 3, B_3 = 3.

Since the median of X_1, X_2, X_3 is 4, B_4 = 4.

Sample Input 2

2
1 2

Sample Output 2

2
1

Sample Input 3

6
5 5 4 4 3 3

Sample Output 3

4
4
4
4
4
4

Solution in Scala (2.11.7) (judge verdict: Wrong Answer)

import scala.io.StdIn
import scala.reflect.ClassTag

object Main {
  import StdInScanner._
  def main(args: Array[String]): Unit = {
    val (n, xs) = scanner.run
    val m = n / 2 - 1

    val xszip = xs.zipWithIndex.map{case(v, i) => (i, v)}.sortBy(_._2)
    val vec = scala.collection.mutable.ArrayBuffer.fill(n)(BigInt(0))
    var cnt = 0
    for((i, v) <- xszip) {
      println(i, v)
      vec(i) = solve(m, xszip.take(cnt), xszip.drop(cnt + 1))
      cnt += 1
    }
    vec.foreach(println)
  }

  def solve(m: Int, l: Seq[(Int, BigInt)], r: Seq[(Int, BigInt)]): BigInt = {
    val llen = l.length
    if(llen > m) l(m)._2
    else r(m - llen)._2
  }

  def scanner =  for {
    n <- readAnInt
    xs <- readBigIntTokens
  } yield (n, xs)
}


case class StdInScanner[A](scan: StdIn.type => A) {
  // transform read result by "f"
  def map[B](f: A => B): StdInScanner[B] =
    StdInScanner(in => f(scan(in)))

  // run this to read A, then obtain new scanner from A using "f", then run the new scanner
  def flatMap[B](f: A => StdInScanner[B]): StdInScanner[B] =
    StdInScanner(in => f(scan(in)).scan(in))

  // run entire scanner and get result
  def run: A = scan(StdIn)
}

object StdInScanner {
  /* pure(read nothing) scanners */
  // read nothing, and return specified "a"
  def apply[A](a: A): StdInScanner[A] = StdInScanner(_ => a)
  // read nothing, and return ()
  def unit: StdInScanner[Unit] = StdInScanner(())

  /* read single line -> produce single value */
  // read a line
  def readALine: StdInScanner[String] = StdInScanner(s => s.readLine().trim)
  // read a line as Int
  def readAnInt: StdInScanner[Int] = StdInScanner(s => s.readInt())
  // read a line as BigInt
  def readABigInt: StdInScanner[BigInt] = readALine.map(BigInt(_))

  def readAPair[A, B](fa: String => A, fb: String => B): StdInScanner[(A, B)] =
    readTokens.map(v => (fa(v(0)), fb(v(1))))

  def readIntPair: StdInScanner[(Int, Int)] =
    readAPair(_.toInt, _.toInt)

  def readATriple[A, B, C](fa: String => A, fb: String => B, fc: String => C): StdInScanner[(A, B, C)] =
    readTokens.map(v => (fa(v(0)), fb(v(1)), fc(v(2))))

  def readIntTriple: StdInScanner[(Int, Int, Int)] =
    readATriple(_.toInt, _.toInt, _.toInt)

  def readTwoPairs[A, B](fa: String => A, fb: String => B): StdInScanner[((A, B), (A, B))] =
    readTokens.map(v => ((fa(v(0)), fb(v(1))), (fa(v(2)), fb(v(3)))))

  def readTwoIntPairs: StdInScanner[((Int, Int), (Int, Int))] =
    readTwoPairs(_.toInt, _.toInt)

  /* read single line -> produce multiple values */
  // read tokens from a line, then map them with "f"
  def readTokensWithMap[A](f: String => A): StdInScanner[Vector[A]] =
    readALine.map(_.split(" ").toVector.map(f))

  def readTokens: StdInScanner[Vector[String]] =
    readTokensWithMap(identity)

  def readIntTokens: StdInScanner[Vector[Int]] =
    readTokensWithMap(_.toInt)

  def readBigIntTokens: StdInScanner[Vector[BigInt]] =
    readTokensWithMap(BigInt(_))

  /* read multiple lines -> produce one value per line */
  def readLines(n: Int): StdInScanner[Vector[String]] =
    StdInScanner(s => Vector.fill(n)(s.readLine().trim))

  def readLinesWithMap[A](n: Int, f: String => A): StdInScanner[Vector[A]] =
    StdInScanner(s => Vector.fill(n)(f(s.readLine())))

  def readInts(n: Int): StdInScanner[Vector[Int]] =
    StdInScanner(s => Vector.fill(n)(s.readInt()))

  def readBigInts(n: Int): StdInScanner[Vector[BigInt]] =
    StdInScanner(s => Vector.fill(n)(BigInt(s.readLine())))

  def readPairs[A, B](n: Int)(fa: String => A, fb: String => B): StdInScanner[Vector[(A, B)]] =
    readLines(n).map(_.map{ line =>
      val t1 :: t2 :: _ = line.split(" ").toList
      (fa(t1), fb(t2))
    })
  def readIntPairs(n: Int): StdInScanner[Vector[(Int, Int)]] =
    readPairs(n)(_.toInt, _.toInt)

  def readTriples[A, B, C](n: Int)(fa: String => A, fb: String => B, fc: String => C): StdInScanner[Vector[(A, B, C)]] =
    readLines(n).map(_.map{ line =>
      val t1 :: t2 :: t3 :: _ = line.split(" ").toList
      (fa(t1), fb(t2), fc(t3))
    })

  def readIntTriples(n: Int): StdInScanner[Vector[(Int, Int, Int)]] =
    readTriples(n)(_.toInt, _.toInt, _.toInt)

  /* read multiple lines -> produce multiple value per line */
  // "2D Matrix of A" is Vector of "Vector of A"
  type Matrix[A] = Vector[Vector[A]]

  // read a table of "rows", then map each elements with "f"
  def readTableWithMap[A: ClassTag](rows: Int, f: String => A): StdInScanner[Matrix[A]] =
    readLines(rows).map{ lns =>
      lns.map(ln => ln.split(" ").toVector.map(tkn => f(tkn)))
    }
  def readTable(rows: Int): StdInScanner[Matrix[String]] =
    readTableWithMap(rows, identity)

  def readIntMatrix(rows: Int): StdInScanner[Matrix[Int]] =
    readTableWithMap(rows, _.toInt)

  def readBigIntMatrix(rows: Int): StdInScanner[Matrix[BigInt]] =
    readTableWithMap(rows, BigInt(_))
}