URI Online Judge | 1957
# Converting to Hexadecimal

**Timelimit: 1**

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 10^{9}).

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 |