#include <fstream>
#include <string.h>
#include <iostream>

#define lmax 1000000

using namespace std;

int noWords(char t[])
{
     int contor = 1;
     char *p = strchr(t, ' ');
     while(p)
     {
        p = strchr(p+1, ' ');
        contor++;
     }
     return contor;
}

int main()
{
    ifstream f("text.in");
    ofstream g("text.out");
    char t[lmax];
    int l, l1;

    f.get(t, lmax);
    l = strlen(t);
    l1 = l - noWords(t) - 1;

    g << l1/noWords(t);
}