Problem:
X Cubic

Write a program which calculates the cube of a given integer x.

Input

An integer x is given in a line.

Output

Print the cube of x in a line.

Constraints

1 ≤ x ≤ 100

Sample Input 1

2

Sample Output 1

8

Sample Input 2

3

Sample Output 2

27

Solution in JAVA (judge verdict: Wrong Answer)

import java.io.*;
public class Main{
    public static void main(String[] args) throws IOException{
        int i = 1;
        int xcubic;
        int a = 0;
        while(i>0){
            System.out.println("数字を入力して下さい（1以上100以下）");
            BufferedReader x = new BufferedReader(new InputStreamReader(System.in));
            a = Integer.parseInt(x.readLine());
            if(a >= 1 && a<=100 )
                i = -1;
         }
         xcubic = a*a*a;
         System.out.println(xcubic);
    }
}