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

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

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

int main()
{
    getline(fin, x);

    for(int i = 0; i < x.size(); i++){
        //cout << x[i];
        if(!isalpha(x[i])){
            if(gasit == true){
                cuv++;
            }
            gasit = false;
        }
        if(isalpha(x[i])){
            nmax++;
            gasit = true;
        }
    }

    cuv++;

    nmax /= cuv;
    fout << nmax;


    return 0;
}