Problem:
Score : 100 points

Problem Statement

Given are two strings S and T consisting of lowercase English letters. Concatenate T and S in this order, without space in between, and print the resulting string.

Constraints

S and T are strings consisting of lowercase English letters.

The lengths of S and T are between 1 and 100 (inclusive).

Input

Input is given from Standard Input in the following format:

S T

Output

Print the resulting string.

Sample Input 1

oder atc

Sample Output 1

atcoder

When S = oder and T = atc, concatenating T and S in this order results in atcoder.

Sample Input 2

humu humu

Sample Output 2

humuhumu

Solution in C# (Mono 4.6.2.0) (judge verdict: Runtime Error)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace AtCoder_solve
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] data = Console.ReadLine().Split(' ');
            ulong a = ulong.Parse(data[0]);
            ulong b = ulong.Parse(data[1]);
            ulong k = ulong.Parse(data[2]);

            /*for (ulong i = 0; i < k; i++)
            {
                if(a>0)
                {
                    a--;
                }else if (b > 0)
                {
                    b--;
                }
                else
                {

                }
            }*/

            if (k < a )
            {
                Console.WriteLine((a - k) + " " + b);
            }else if (a <=k)
            {
                if (a + b - k > 0)
                {
                    Console.WriteLine(0 + " " + (b + a - k));

                }

                else if (a + b - k <= 0)
                {
                    Console.WriteLine(0 + " " + 0);
                }
            }


            


        }
    }
}