#include<iostream>
#include<fstream>
using namespace std;
ifstream in("text.in");
ofstream out("text.out");
int main()
{
    int l,c,x,k;
    char v[100];
    in.getline(v,100);
    x=0;l=0;c=0;k=0;
    while(v[x]!='\0')
    {
        if(((int)v[x]>=65 && (int)v[x]<=90 )||((int)v[x]>=97 &&(int)v[x]<=122))
            {
            if(k==0)
                {
                    l++;c++;
                }
                else l++;
            k++;
            }
            else k=0;

        x++;
    }
    out<<l/c;
    out.close();
    in.close();
}