Problem:
Score : 100 points

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

Solution in Rust (1.15.1) (judge verdict: Accepted)


fn getline() -> String{
    let mut __ret = String::new();
    std::io::stdin().read_line(&mut __ret).ok();
    return __ret;
}

fn main() {
    let s = getline();
    let inp:Vec<_> = s.trim().split(' ').collect();
    let a = inp[0].to_string().chars().collect::<Vec<char>>();
    let b = inp[1].to_string().chars().collect::<Vec<char>>();
    let c = inp[2].to_string().chars().collect::<Vec<char>>();
    let au: Vec<_> = a[0].to_uppercase().collect();
    let bu: Vec<_> = b[0].to_uppercase().collect();
    let cu: Vec<_> = c[0].to_uppercase().collect();
    println!("{}{}{}", au[0], bu[0], cu[0]);
}