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 Java7 (OpenJDK 1.7.0) (judge verdict: Runtime Error)

import java.util.*;

public class Main {
    public static void main(String[] args) {
        long a;
        long b;
        long k;
		Scanner sc = new Scanner(System.in);
        // 整数の入力
		a = sc.nextLong();
        b = sc.nextLong();
        k = sc.nextLong();
        if (a <= k) {
            long wka = a;
            a = 0;
            k = k - wka;
        }
        else {
            a = a - k;
            k = 0;
        }
        if (b <= k) {
            b = 0;
            k = k - b;
        }
        else {
            b = b - k;
            k = 0;
        }
        System.out.println(a + " " + b);
	}
}