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

using namespace std;

int main()
{
    ifstream f("text.in");
    ofstream g("text.out");

    int c=0,l=0,p;
    char m,x;
    p=0;
    while(f.get(m))
    {
        if(isalpha(m)&&p)
        {
            ++l;
        }
        else if(isalpha(m)&&p==0)
        {
            ++c;
            ++l;
        }
        p=isalpha(m);

    }
    g << l/c;

    return 0;
}