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

const string file_name = "text";
ifstream fin(file_name + ".in");
ofstream fout(file_name + ".out");

char x;
long long  cuv, nmax;
bool gasit = false;

int main()
{
    while(fin.get(x)){
        if(isalpha(x)){
            cuv++;
            while(isalpha(x)){
                fin.get(x);
                nmax++;
            }
        }
    }

    nmax /= cuv;
    fout << nmax;


    return 0;
}