837A. Text Volume

/***

            Bismillahir Rahmanir Rahim
            Read the name of Allah, who created you!!!
            Author : Shah Newaj Rabbi Shishir
            Department of CSE, City University, Bangladesh.

***/

#include <bits/stdc++.h>
using namespace std;

#define sf scanf
#define pf printf
#define scase sf ("%d",&tc)
#define sn sf ("%d",&n)
#define whilecase while (tc--)
#define eof while (cin >> n)
#define forloop for (pos=1; pos<=tc; pos++)
#define arrayloop (i=0; i<n; i++)
#define cinstr cin >> str
#define getstr getline (cin,str)
#define pcase pf ("Case %d: ",pos)
#define pb push_back
#define in insert
#define llu unsigned long long
#define lld long long
#define u unsigned int

int main (void)
{
    /*freopen ("input.txt","r",stdin);
    freopen ("output.txt","w",stdout);*/

    int n,i,maxi,k;
    string str;

    while (cin >> n)
    {
        getchar();
        getline (cin,str);

        maxi = k = 0;

        for (i=0; i<n; i++)
        {
            if (isupper(str[i]))
                k++;

            maxi = max (k,maxi);

            if (str[i] == ' ')
                k = 0;
        }

        cout << maxi << endl;
    }

    return 0;
}