#include <cstdio>

using namespace std;

int main()
{
    int car=0,cuv=0,g=0,sol;
    char c;
    FILE *f1 = fopen("text.in", "r");
    FILE *f2 = fopen("text.out", "w");
    while(!feof(f1))
    {
        fscanf(f1,"%c",&c);
        if(('a'<=c&&c<='z')||('A'<=c&&c<='Z'))
        {
            car++;
            if(!g)
                cuv++;
            g=1;
        }
        else
            g=0;
    }
    sol=car/cuv;
    fprintf(f2,"%d",sol);
    fclose(f1);
    fclose(f2);
    return 0;
}