Converting to Hexadecimal
By M.C. Pinto, UNILA 
Brazil
By M.C. Pinto, UNILA Brazil
Data stored in computers are in binary. An economic way of visualizing these numbers is the usage of base 16 (hexadecimal).
Your task is to write a program that, given a natural number at base 10, shows its representation in hexadecimal.
The input is a positive integer number V at base 10 (1 ≤ V ≤ 2 x 109).
The output is the same number V at base 16 in a single line (don't forget the end-of-line character). Use uppercase letters, as shown in the examples.
| Input Samples | Output Samples |
|
10 |
A |
|
15 |
F |
|
16 |
10 |
|
31 |
1F |
|
65535 |
FFFF |