Problem:
Score : 200 points

Problem Statement

Find the number of palindromic numbers among the integers between A and B (inclusive).
Here, a palindromic number is a positive integer whose string representation in base 10 (without leading zeros) reads the same forward and backward.

Constraints

10000 \leq A \leq B \leq 99999

All input values are integers.

Input

Input is given from Standard Input in the following format:

A B

Output

Print the number of palindromic numbers among the integers between A and B (inclusive).

Sample Input 1

11009 11332

Sample Output 1

4

There are four integers that satisfy the conditions: 11011, 11111, 11211 and 11311.

Sample Input 2

31415 92653

Sample Output 2

612

Solution in Kotlin (1.0.0) (judge verdict: Accepted)

fun main(args: Array<String>) {

    val list = readLine()!!.split(" ").map(String::toInt)

    var result = mutableListOf<Int>()

    for (i in list[0]..list[1]) {

        // ロジックが汚い。やりたいことは剰余と商を求めること
        // 商と余りのPair型で返却するfunctionを作成してみる？
        val five = i / 10
        val fivex = i % 10
        val four = five / 10
        val fourx = five % 10
        val three = four / 10
        val two = three / 10
        val twox = three % 10
        val one = two / 10
        val onex = two % 10

        if (onex == fivex && twox == fourx)
            result.add(i)
    }
    println(result.size)
}