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

ifstream f("text.in");
ofstream g("text.out");
char c;
int litere,cuvinte;

int main()
{
    bool incep=1;
    while(f.get(c))
    {
        if((c>='a' && c<='z') || (c>='A' && c<='Z'))
        {
                if(incep)
                    cuvinte++;
                litere++;
                incep=0;
        }
        else
            incep=1;
    }

    g<<litere/cuvinte;

    return 0;
}