#include <fstream>
#include <string>

using namespace std;

ifstream in("text.in");
ofstream out("text.out");

int main()
{
    int l = 0, ok = 0, c = 0;
    char s;
    while( !in.eof() ) {
        in.get(s);
        if( isalpha(s) ) {
            l++;
            ok=1;
        }
        else if( ok == 1 ) {
            c++;
            ok=0;
        }
    }

    out << l / c << '\n';
    return 0;
}