Text Volume

Description:

Input:

The first line contains one integer number n (1 ≤ n ≤ 200) — length of the text.

The second line contains text of single-space separated words s₁, s₂, ..., s_i, consisting only of small and capital Latin letters.

Output:

Print one integer number — volume of text.

Sample Input:

7
NonZERO

Sample Output:

5

Sample Input:

24
this is zero answer text

Sample Output:

0

Sample Input:

24
Harbour Space University

Sample Output:

1

Note:

In the first example there is only one word, there are 5 capital letters in it.

In the second example all of the words contain 0 capital letters.