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