Score : $100$ points

问题陈述

在十六进制系统中，除了使用数字0123456789外，还使用对应于$10,11,12,13,14$和$15$的数字ABCDEF。因此，每介于$0$和$255$之间的整数都用一个或两个数字表示。

例如，$0$和$12$分别用一个数字的十六进制数0和C表示；而$99$和$255$则分别用两个数字的十六进制数63和FF表示。

给定一个介于$0$和$255$之间的整数$N$，请将其转换为一个精确的两位十六进制数，如果需要的话，在前面补零。

以上为通义千问 qwen-max 翻译，仅供参考。

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.

Notes

The judge is case-sensitive. Specifically, you cannot use abcdef as hexadecimal digits instead of ABCDEF.

Constraints

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

Input

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

$N$

Output

Print the answer.

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

update @ 2024/3/10 11:24:56