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 <stdio.h>

int main(){
    char s[3][80];
    char s_out[3];

    scanf("%s %s %s",s[0],s[1],s[2]);

    for(int i = 0;i < 3;i++){
        s_out[i] = s[i][0] + ('A' - 'a');
    }

    for(int i = 0;i < 3;i++){
        printf("%c",s_out[i]);
    }
    printf("\n");

    return 0;
}