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 Java8 (OpenJDK 1.8.0) (judge verdict: Accepted)

// package app;

import java.util.Arrays;
import java.util.Objects;
import java.util.Scanner;
import java.util.stream.Stream;

public class Main {

    public static void main(final String[] args) throws Exception {
        final Scanner sc = new Scanner(System.in);

        // final String x = sc.next();
        // final String y = sc.next();

        final String s1 = sc.next();
        final String s2 = sc.next();
        final String s3 = sc.next();
        // final int N = sc.nextInt();
        // final int D = sc.nextInt();
        // System.out.println();

        StringBuffer result = new StringBuffer().append(s1.charAt(0)).append(s2.charAt(0)).append(s3.charAt(0));

        System.out.println(result.toString().toUpperCase());

        // System.out.println(A <= X && A + B >= X ? "YES" : "NO");

    }
}