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 <string.h>
int main()
{
    char s[1002];
    int i,h,len,j,n,k;
    scanf(" %[^\n]", s);
    len=strlen(s);
    for(i=0;i<len;i++){
        if(i==0) {
            k = s[i]-32;
            printf("%c",k);
        }
    }

    len=strlen(s);
    for(j=0;j<len;j++) {
        if (s[j] == ' ') {
            s[j] = s[j + 1];
            n=s[j]-32;
            printf("%c",n);}
    }
    printf("\n");
    return 0;
}