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.

Input

Input is given from Standard Input in the following format:
s_1 s_2 s_3

Output

Print the answer.

Constraints

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

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

见题面 Input 部分

见题面 Output 部分