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 Java8 (OpenJDK 1.8.0) (judge verdict: Runtime Error)

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		String str = scanner.nextLine();
		String str2 = scanner.nextLine();
		
		
		boolean isClear = true;
		for (int i = 0; i < 2; i++) {
			String s = i == 0 ? str : str2;
			if (s.length() < 1 || s.length() > 100) {
				isClear = false;
				break;
			}
		}
		if (isClear) {
			System.out.println(str2 + str);
		}
	}

}