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>
 #include<ctype.h>
 int main(void)
 {
     char s1[10],s2[10],s3[10];
     char S1,S2,S3;

     scanf("%s %s %s",s1,s2,s3);

     S1= toupper(s1[0]);
     S2= toupper(s2[0]);
     S3= toupper(s3[0]);

     printf("%c%c%c\n",S1,S2,S3);

     return 0;
 }