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++14 (GCC 5.4.1) (judge verdict: Accepted)

#include<stdio.h>

int main(){
    char s1[11],s2[11],s3[11];
    int dig;
    scanf("%s %s %s",s1,s2,s3);
    if('A'<='a'){
        dig='a'-'A';
        printf("%c%c%c",s1[0]-dig,s2[0]-dig,s3[0]-dig);
    }
    else{
        dig='A'-'a';
        printf("%c%c%c",s1[0]+dig,s2[0]+dig,s3[0]+dig);
    }
    return 0;
}