JorgeOlvera

import java.io.*;
import java.util.*;
 
 
public class searchAndDestroy {
 
    public static void main(String[] args) throws IOException{

        Scanner input = new Scanner(System.in);
        //Establish array length

JorgeOlvera

import java.util.Scanner;
 
public class rowscols {
 
	public static void main (String [] args) {
 
		Scanner input = new Scanner(System.in);
 
		int para1 = input.nextInt();
		

JorgeOlvera

//Convertanupper-caselettertoalowercaseletterandreturnthelower
//case letter. (Hint: Check first to be sure that it is not lower case already.)
	import java.util.Scanner;
	public class dacase {
		public static void main(String[]args){
		
			Scanner input = new Scanner(System.in);

			char a = input.nextln();
			char b = a.charAt(0);

JorgeOlvera

/*Returntrueifthearraycontains,somewhere,threeincreasingadjacent numbers like 4, 5, 6 or 23, 24, 25.
tripleUp({1, 4, 5, 6, 2}) → true tripleUp({1, 2, 3}) → true tripleUp({1, 2, 4}) → false
     public boolean tripleUp(int[] nums)*/
     import java.util.Scanner;

     	public class uniqueAdjacent {
     		public static void main(String[] args){

     			Scanner input = new Scanner(System.in);
     			//Establish array length

JorgeOlvera

/*Returntrueifthearraycontains,somewhere,threeincreasingadjacent numbers like 4, 5, 6 or 23, 24, 25.
tripleUp({1, 4, 5, 6, 2}) → true tripleUp({1, 2, 3}) → true tripleUp({1, 2, 4}) → false
     public boolean tripleUp(int[] nums)*/
     import java.util.Scanner;

     	public class adjacent {
     		public static void main(String[] args){

     			Scanner input = new Scanner(System.in);
     			//Establish array length

JorgeOlvera

/* Returnthesumofthenumbersinthearray,returning0foranempty array. 
Except the number 13 is very unlucky, so it does not count and numbers 
that come immediately after a 13 also do not count.
sum13({1, 2, 2, 1}) → 6
*/
import java.util.Scanner;
 
public class internalsum{
	public static void main(String [] args)
	{

JorgeOlvera

/*Write a method public static int max(int[][] a)that 
returns the maximum value in the 2d parameter array a.
*/
import java.util.Scanner;

	public class maximumArray{
		public static int max(int[][] my2d) {

			Scanner input = new Scanner(System.in);

JorgeOlvera

/*Returnanarraythatis"leftshifted"byone--so{6,2,5,3}returns{2,5,3, 6}. You may modify and return the given array, or return a new array.
shiftLeft({6, 2, 5, 3}) → {2, 5, 3, 6} shiftLeft({1, 2}) → {2, 1} shiftLeft({1}) → {1}
     public int[] shiftLeft(int[] nums)
     */
     import java.util.Scanner;

 
public class holyshift {
	public static void main(String [] args) {
 

JorgeOlvera

//Foranygiven(small)number,printasquareofasteriskswiththelengthof each side equal to the given number.
import java.util.Scanner;

	public class asteriskz{

		public static void main(String[] args){
			Scanner input = new Scanner(System.in);

			int asteriskNumber = input.nextInt();

JorgeOlvera

// Calculate and return the area of a circle, given the radius.

import java.util.Scanner;

	public class circleArea {
		public static void main (String[] args){
				Scanner input = new Scanner(System.in);

				double radius = input.nextDouble();
				radius = calculateArea(radius);