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 Python (3.4.3) (judge verdict: Runtime Error)

n = int(input())
a = list(map(int, input().split()))
count = 0
sum_ = 0
for i in range(n):
    if sum_ * (sum_+a[i]) <0 or i == 0:
        sum_ += a[i]
    elif sum_ > 0:
        count += sum_+a[i]+1
        a[i] = -sum_-1
        sum_ += a[i]
    elif sum_ < 0:
        count += abs(sum_+a[i])+1
        a[i] = -sum_+1
        sum_ += a[i]

print(count)