#include<fstream>
#include<cstring>
#include<iostream>

using namespace std;
 
char s[205],mat[205][205],x;
 
bool Verificare(char x)
{
    return ( ('a'<=x && x<='z') || ('A'<=x && x<='Z'));
}
 
int main ()
{
    bool cuvant = false;
    char x;
    int nrcuv=0,nrlit=0;
	
    ifstream fin("text.in");
    while(fin.get(x))
    {
        if(Verificare(x))
        {
            nrlit++;
            if(cuvant == false)
            {
                nrcuv++;
                cuvant = true;
            }
        }
        else cuvant = false;
    }
    fin.close();
     
    ofstream fout("text.out");
    fout<<(nrlit/nrcuv)<<"\n";
    fout.close();
    return 0;
}