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 C (Clang 3.8.0) (judge verdict: Accepted)

#include <ctype.h>
#include <stdio.h>

#define MAX_CH 11

int
main(void)
{
	char s1[MAX_CH], s2[MAX_CH], s3[MAX_CH];
	scanf("%s %s %s", s1, s2, s3);

	char f = toupper(s1[0]);
	char s = toupper(s2[0]);
	char t = toupper(s3[0]);

	printf("%c%c%c\n", f, s, t);
	return 0;
}