#include <bits/stdc++.h>

using namespace std;

int main()
{
    freopen("text.in", "r", stdin);
    freopen("text.out", "w", stdout);
    char c;
    bool in;
    int nWords, nAlpha;

    nWords = nAlpha = in = 0;

    while ( ~(c = getchar()) )
    {
        if ( isalpha(c) )
        {
            nWords += !in;
            in = 1;
            nAlpha++;
        }
        else
            in = 0;
    }
    printf("%d\n", nAlpha / nWords);
    return 0;
}