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 Fortran (GNU Fortran 9.2.1) (judge verdict: Accepted)

program answer
  implicit none
  character(len=10) :: a, b, c
  character(len=26) :: s
  character(len=26) :: t
  integer(8) :: i

  read(*,*) a, b, c

  t="abcdefghijklmnopqrstuvwxyz"

  s="ABCDEFGHIJKLMNOPQRSTUVWXYZ"
  
  do i = 1, 26
     if(a(1:1)==t(i:i)) then
        a(1:1)=s(i:i)
     end if

     if(b(1:1)==t(i:i)) then
        b(1:1)=s(i:i)
     end if

     if(c(1:1)==t(i:i)) then
        c(1:1)=s(i:i)
     end if
  end do
  
  write(*,*)  a(1:1), b(1:1), c(1:1)
  stop
  end program answer