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: Accepted)

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

namespace ABC149
{
    class Program
    {
        static void Main(string[] args)
        {
            a();
        }

        public static void a()
        {
            string[] st = Console.ReadLine().Split(' ');
            string ans = "";
            ans += st[1];
            ans += st[0];
            Console.WriteLine(ans);
        }

        public static void b()
        {
            long[] abk = Console.ReadLine().Split(' ').Select(s => long.Parse(s)).ToArray();
            long a = abk[0], b = abk[1], k = abk[2];
            long a1 = a;
            a -= k;
            if(a < 0)
            { a = 0; }
            k -= a1;
            if(k < 0)
            { k = 0; }
            b -= k;
            if(b < 0)
            { b = 0; }
            Console.WriteLine("{0} {1}", a, b);
        }

        public static void c()
        {
            long x = long.Parse(Console.ReadLine());
            long ans = x;
            while(true)
            {
                if(x % 2 == 0)
                {
                    x++;
                    continue;
                }
                if (x != ans)
                { break; }
                else
                { x++; }
            }
            Console.WriteLine(ans);
        }
    }
}