#include <stdio.h>

using namespace std;
FILE* f, * g;


int main()
{
    char ch;
    int ok = 0;
    long long nr = 0, cuv = 0, sol;
    f = fopen("text.in", "r");
    g = fopen("text.out", "w");
    ch = fgetc(f);
    while (!feof(f))
    {

        if ((ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z'))
            nr++, ok = 1;
        else
        {
            if (ok == 1)
                cuv++;
            ok = 0;

        }
        ch = fgetc(f);
    }
    if (cuv != 0)
        sol = nr / cuv;
    else
        sol = 0;
    fprintf(g, "%lld", sol);
    fclose(f);
    fclose(g);
    return 0;
}