You are given a text of single-space separated words, consisting of small and capital Latin letters.

Volume of the word is number of capital letters in the word. Volume of the text is maximum volume of all words in the text.

Calculate the volume of the given text.

-----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 s_1, s_2, ..., s_{i}, consisting only of small and capital Latin letters.

-----Output-----

Print one integer number — volume of text.

-----Examples-----

Input 7 NonZERO

Output 5

Input 24 this is zero answer text

Output 0

Input 24 Harbour Space University

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.