Problem Statement

In the hexadecimal system, where the digits ABCDEF corresponding to 10,11,12,13,14, and 15 are used in addition to 0123456789, every integer between 0 and 255 is represented as a 1- or 2-digit numeral.
For example, 0 and 12 are represented as 1-digit hexadecimal numerals 0 and C; 99 and 255 are represented as 2-digit hexadecimals 63 and FF.
Given an integer N between 0 and 255, convert it to an exactly two-digit hexadecimal numeral, prepending leading 0s if necessary.

Input

The input is given from Standard Input in the following format:
N

Output

Print the answer.

Constraints

• $0 \leq N \leq 255$
• N is an integer.

Sample Input 1

99

Sample Output 1

63

99 is represented as 63 in hexadecimal.

Sample Input 2

12

Sample Output 2

0C

12 is represented as C in hexadecimal.
Since we ask you to convert it to a two-digit hexadecimal numeral, the answer is 0C, where 0 is prepended to C.

Sample Input 3

0

Sample Output 3

00

Sample Input 4

255

Sample Output 4

FF

见题面 Input 部分

见题面 Output 部分