#include <iostream>

using namespace std;

int main() {

    int careht_1=0;
    int a=0;
    char w[100];

    cout << "Type the words:";
    cin.getline(w, 99);

    if(w[0] >='a'&& w[0] <='z')
    {
        a++;
    }

    while (w[careht_1] > 0)
    {
        if ((w[careht_1]<'a')|| (w[careht_1]>'z'))
            {
            a++;
            if ((w[careht_1+1]<'a')|| (w[careht_1+1]>'z') || (w[careht_1]==0))
            {
                a=a-1;
            }
        }
        careht_1++;
    }

    cout <<a;
}