#include<fstream>
#include<cstring>
using namespace std;
ifstream  fin("text.in");
ofstream fout("text.out");

int n,c,l,i,k;//nr de cuvinte/nr de litere
char a[2];

int main()
{
    l=0;c=0;k=0;
    while(fin.get(a,2))
    {
            if(a[0]>='a'&& a[0]<='z')a[0]=a[0]-32;
            if(a[0]<'A'|| a[0]>'Z'){k=0;}
            else
                {
                    l++;
                    if(k==0){c++; k=1;}
                }
    }
    fout<<l/c;
    fin.close();
    fout.close();
    return 0;
}