#include <fstream>

using namespace std;
ifstream cin("text.in");
ofstream cout("text.out");
int main ()
{
    string txt;
    int l=0,c=0,cuv=0;
    getline(cin,txt);

    for(int i=0;i<txt.length();i++)
    {
        if(isalpha(txt[i]))
        {
            l++;
            cuv=1;
        }
        if (!isalpha(txt[i])&&(cuv==1))
            {
                cuv=0;
                c++;
            }

    }
    cout<<l/c;
    return 0;
}