Submission #1842397

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Source Code Expand

import java.util._
import java.io._
import scala.collection.mutable._
import scala.util.control._
object Main {
  def main(args:Array[String])={
    val a = Scanner.nextInt
    println(a*2)
  }
}


object Scanner{

  private val buf = new Array[Byte](1024)
  private var ptr = 0
  private var len = 0

  @inline private def isPrintableChar(c: Int): Boolean = 33 <= c && c<= 126
  @inline private def hasNextByte(): Boolean = 
    if(len <= ptr){ptr = 0;len = System.in.read(buf);len > 0} else { true }
  @inline private def hasNext(): Boolean = {
    while(hasNextByte() && !isPrintableChar(buf(ptr))) ptr += 1
    hasNextByte()
  }
  @inline private def readByte(): Byte = 
    if(hasNextByte()){val res = buf(ptr); ptr+=1; res}else{ -1 }
  def next(): String = {
    val s = new StringBuilder
    var b = readByte()
    while(isPrintableChar(b)){ s.append(b.toChar); b = readByte() }
    s.toString
  }

  def nextInt(): Int = nextLong.toInt
  def nextLong(): Long = {
    var minus = false
    var b = readByte
    if(b == '-'){minus = true; b=readByte()}
    def go(b: Byte, n:Long = 0):Long = if ('0' <= b && b <= '9') { go(readByte(), n * 10 + b - '0') }
        else if (minus) { -n } else { n }
    go(b)
  }

  def nextDouble(): Double = next.toDouble

}

Submission Info

Judge Result