Problem:
Score : 100 points

Problem Statement

Given is a lowercase English letter C that is not z. Print the letter that follows C in alphabetical order.

Constraints

C is a lowercase English letter that is not z.

Input

Input is given from Standard Input in the following format:

C

Output

Print the letter that follows C in alphabetical order.

Sample Input 1

a

Sample Output 1

b

a is followed by b.

Sample Input 2

y

Sample Output 2

z

y is followed by z.

Solution in Kotlin (1.3.71) (judge verdict: Accepted)

fun solve(S: String) {
    val alp = "abcdefghijklmnopqrstuvwxyz"
    repeat(26) {
//        println(it)
        if (alp[it].toString() == S) {
            println(alp[(it + 1) % 26])
        }
    }
}

fun main() {
    val S = readLine()!!
//    val N = readLine()!!.toInt()
//    val (N, M) = readLine()!!.split(" ").map { it.toInt() }
//    val A = readLine()!!.split(" ").map { it.toInt() }
    solve(S)
}