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 (GCC 5.4.1) (judge verdict: Accepted)

#include<stdio.h>
#define rep(i,n) for(int i = 0; i < n; i++)

int main(void) {
  char S[3][11];
  scanf("%s %s %s", S[0], S[1], S[2]);

  rep(i, 3) {
    S[i][0] = S[i][0] - 'a' + 'A';
  }
  printf("%c%c%c\n", S[0][0], S[1][0], S[2][0]);
  return 0;
}