using System.CodeDom.Compiler;
using System.Collections.Generic;
using System.Collections;
using System.ComponentModel;
using System.Diagnostics.CodeAnalysis;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.Serialization;
using System.Text.RegularExpressions;
using System.Text;
using System;



class Solution
{
    
    public static void Main(string[] args)
    {
        try {
            List<string> numsInInput = new List<string>();
        
            string S = Console.ReadLine();
            
            int num = Int32.Parse(S); // try to convert the string to int
            
            for(int i = 0; i < S.Length ; i++) {
                numsInInput.Add(S.Substring(i, 1));
            }
            
            if (numsInInput.Count() > 0) {
            foreach (string s in numsInInput) {
                Console.Write(s);
            }    
            }
        } catch (Exception ex) {
            Console.WriteLine("Bad String");
        } finally {
            //
        }
        
        //FindTheNumbersInInput(S, ref numsInInput);
        /*if (numsInInput.Count() > 0) {
            foreach (string s in numsInInput) {
                Console.Write(s);
            }
        }*/
    }
}