Problem:
Reverse Sequence

Write a program which reverses a given string str.

Input

str (the size of str ≤ 20) is given in a line.

Output

Print the reversed str in a line.

Sample Input

w32nimda

Output for the Sample Input

admin23w

Solution in C# (judge verdict: Accepted)

using System;

public class Program {
  public static void Main() {
    string input = Console.ReadLine();
    string reverse = "";
    for (int i = 1; i <= input.Length; i++) {
      reverse += input.Substring(input.Length - i, 1);
    }
    Console.WriteLine(reverse);
  }
}