#include <iostream>
#include <fstream>
using namespace std;
bool eLitera(char c)
{
    if((('a'<=c)&&(c<='z'))||(('A'<=c)&&(c<='Z'))) return 1;
    return 0;
}
int main()
{
    char c;
    bool ok;
    int nr=0,cuv=1;
    ifstream f("text.in");
    ofstream g("text.out");
    while(f.good())
    {
        f.get(c);
        if(eLitera(c))
        {
            nr++;
            ok=1;
        }
        else if(ok)
        {
            ok=0;
            cuv++;
        }
    }
    g<<nr/cuv;
}