#include <iostream>
#include <fstream>
#include <sstream>
using namespace std;
ifstream f("text.in");
ofstream g("text.out");

inline bool elitera(char c)
{
    return ((c>='a' && c<='z') || (c>='A' && c<='Z'));
}
int main()
{
    int k=0,len=0,cuv=0;
    char c;
    while (f>>noskipws>>c)
    {
        if (elitera(c))
        {
            len++;
            if (k==0) cuv++;
            k=1;

        }
        else k=0;
    }
    int sol=len/cuv;
    g<<sol;
    f.close();
    g.close();
    return 0;

}