Read different types of data from standard input, process them as shown in output format and print the answer to standard output.

/*
Problem Statement: Read different types of data from standard input, process them as shown in output format and print the answer to standard output.

Input format:
First line contains integer N.
Second line contains string S.
Output format:
First line should contain N x 2.
Second line should contain the same string S.

Constraints:
0≤N≤10
1≤|S|≤15 where |S|= length of string S
 */

import java.util.Scanner;
public class TestClass {
     public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int number = 0;
        String string = null;
        int firstInput = sc.nextInt();
        String secondInput = sc.next();
        // apply constraints
        if (firstInput >= 0 && firstInput <= 10) {
            number = firstInput;
        }

        if (secondInput.length() >= 1 && secondInput.length() <= 15) {
            string = secondInput;
        }
        System.out.println(number * 2);
        System.out.println(string);
        sc.close();

    }
}