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 <bits/stdc++.h>
#define rep(i, s, e) for(int i = s; i < e; i++)
#define rrep(i, s, e) for(int i = s; i > (s)-(e); i--)
#define pr(s) std::cout << s << std::endl
#define prb(s) std::cout << s
using namespace std;



int main() {
  cin.tie(0);
  ios::sync_with_stdio(false);


  char a[11], b[11], c[11];
  cin >> a >> b >> c;

  pr((char)(a[0]-'a'+'A') << (char)(b[0]-'a'+'A') << (char)(c[0]-'a'+'A'));


  return 0;
}