#include <bits/stdc++.h>

using namespace std;

FILE *fin=fopen("text.in","r");
ofstream fout("text.out");

int ltotal, nrc;
char s;
int main()
{
    int i, l;
    bool k=0;
    while(fscanf(fin, "%c", &s)!=EOF)
    if(isalpha(s))
        {
            ltotal++;
            if(k==0)
            {
                nrc++;
                k=1;
            }
        }
        else k=0;
    if(nrc!=0)
    fout<<ltotal/nrc<<'\n';
    else
    fout<<0<<'\n';
    return 0;
}