#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];
unsigned char ch;

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