#include <fstream>
#include <cctype>

using namespace std;

ifstream fin("text.in");
ofstream fout("text.out");
int main()
{
    int s;
    bool opened=false;
    char c;
    int l=0,nrcuv=0;
    while(fin.get(c))
    {
        if(isalpha(c))
        {
            l++;
            opened=true;
        }
        else
        {
            if(opened)
                nrcuv++;
            opened=false;
        }

    }
    fout<<l/nrcuv<<'\n';


    fin.close();
    fout.close();
    return 0;
}