#include <bits/stdc++.h>
using namespace std;
ifstream f ("text.in") ;
ofstream g ("text.out");
char x;
long long NrCuv = 0 , NrChr = 0;
bool haveWord;
int main()
{
    haveWord = false;
    while (f >> noskipws >> x)
    {

        if (isalpha(x))
        {
        NrChr ++ ;
        if (!haveWord) haveWord = true;
        }
        else{
        if (haveWord) {
            haveWord = false;
            NrCuv ++ ;
        }
        }
    }
    g << (long long) (NrChr / NrCuv) ;
    f.close() ;
    g.close();
    return 0 ;
}