题目描述
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-----
atcoder beginner contest
-----Sample Output-----
ABC
The initial letters of atcoder, beginner and contest are a, b and c. Uppercase and concatenate them to obtain ABC.
输入格式
见题面
输出格式
见题面
样例输入
atcoder beginner contest
样例输出
ABC