Problem:
Score : 66 points

Problem Statement

Summer vacation ended at last and the second semester has begun.
You, a Kyoto University student, came to university and heard a rumor that somebody will barricade the entrance of your classroom.
The barricade will be built just before the start of the A-th class and removed by Kyoto University students just before the start of the B-th class.
All the classes conducted when the barricade is blocking the entrance will be cancelled and you will not be able to attend them.
Today you take N classes and class i is conducted in the t_i-th period.
You take at most one class in each period.
Find the number of classes you can attend.

Constraints

1 \leq N \leq 1000

1 \leq A < B \leq 10^9

1 \leq t_i \leq 10^9

All t_i values are distinct.

Input

N, A and B are given on the first line and t_i is given on the (i+1)-th line.

N A B
t1
:
tN

Output

Print the number of classes you can attend.

Sample Input 1

5 5 9
4
3
6
9
1

Sample Output 1

4

You can not only attend the third class.

Sample Input 2

5 4 9
5
6
7
8
9

Sample Output 2

1

You can only attend the fifth class.

Sample Input 3

4 3 6
9
6
8
1

Sample Output 3

4

You can attend all the classes.

Sample Input 4

2 1 2
1
2

Sample Output 4

1

You can not attend the first class, but can attend the second.

Solution in Scala (2.11.7) (judge verdict: Accepted)

import scala.collection.mutable.ListBuffer

/**
 * Created by rasrivastava on 10/17/16.
 */
class Barricade(val classStartBegin : Int, val classStartEnd : Int) {
  def getAvoidClasses(classes : List[Int]) : Int = {
    var noClasses = 0
    val range = Range(classStartBegin,classStartEnd)
    //println(range)
    classes.foreach(classPeriod => {
      if (range.contains(classPeriod)) {
        noClasses += 1
      }
    })

    noClasses
  }
}

object Main extends App {
  val line = readLine()
  val lineArr = line.split(" ")
  val n = lineArr(0).toInt
  val a = lineArr(1).toInt
  val b = lineArr(2).toInt
  val barricade = new Barricade(a,b)
  val lstBuffer = new ListBuffer[Int]
  for (i <- 0 to n-1) {
    lstBuffer.+=(readLine().toInt)
  }

  val lst = lstBuffer.toList
  println(lst.size - barricade.getAvoidClasses(lst))
}