For java: import java.io.; import java.util.; import java.text.; import java.math.; import java.util.regex.*;

public class Solution {

public static void main(String[] args) {
    int i = 4;
    double d = 4.0;
    String s = "HackerRank ";

    Scanner scan = new Scanner(System.in);

    /* Declare second integer, double, and String variables. */
    int j = scan.nextInt();
    double e = scan.nextDouble();
    scan.nextLine();
    String k = scan.nextLine();
    String o = s+k;

    /* Read and save an integer, double, and String to your variables.*/
    // Note: If you have trouble reading the entire String, please go back and review the Tutorial closely.

    /* Print the sum of both integer variables on a new line. */
    System.out.println(i+j);

    /* Print the sum of the double variables on a new line. */
    System.out.println(d+e);
    /* Concatenate and print the String variables on a new line; 
        the 's' variable above should be printed first. */
    System.out.println(o);
    scan.close();
}

}