The number 3025 has a remarkable quirk: if you split its decimal representation

in two strings of equal length (30 and 25) and square the sum of the numbers so obtained, you obtain the

original number:

(30 + 25)

2

=3025

The problem is to determine all numbers with this property having a given even number of digits.

For example, 4-digit numbers run from 0000 to 9999. Note that leading zeroes should be taken into

account. This means that 0001 which is equal to is a quirksome number of 4 digits. The number of digits

may be 2,4,6 or 8. Although maxint is only 32767 and numbers of eight digits are asked for, a well-versed

programmer can keep his numbers in the range of the integers. However efficiency should be given a

thought.

Input

The input of your program is a textflle containing numbers of digits (taken from 2,4,6,8), each number on

a line of its own.

Output

The output is a textfile consisting of lines containing the quirksome numbers (ordered according to the

input numbers and for each input number in increasing order).

Warning: Please note that the number of digits in the output is equal to the number in the corresponding

input line : leading zeroes may not be suppressed.

Sample Input 2

2

Sample Output

00

01

81

00

01

81