100590: [AtCoder]ABC059 A - Three-letter acronym

Problem Statement

You are given three words $s_1$, $s_2$ and $s_3$, each composed of lowercase English letters, with spaces in between. Print the acronym formed from the uppercased initial letters of the words.

Constraints

• $s_1$, $s_2$ and $s_3$ are composed of lowercase English letters.
• $1 ≤ |s_i| ≤ 10 (1≤i≤3)$

Input

Input is given from Standard Input in the following format:

$s_1$ $s_2$ $s_3$

Output

Print the answer.

Sample Input 1

atcoder beginner contest

Sample Output 1

ABC

The initial letters of atcoder, beginner and contest are a, b and c. Uppercase and concatenate them to obtain ABC.

Sample Input 2

resident register number

Sample Output 2

RRN

Sample Input 3

k nearest neighbor

Sample Output 3

KNN

Sample Input 4

async layered coding

Sample Output 4

ALC