#include <string.h>
#include <iostream>
#include <fstream>
using namespace std;
int main ()
{
    ifstream in ("text.in");
    ofstream out ("text.out");
    char a[1024];
    int n=0,i=0,m=0,nc=0,nl=0,banana=0;
    in.get(a,1024);
    n=strlen(a);
    in.close();
    for(i=0;i<n;i++)
        if((a[i]<='z' && a[i]>='a') || (a[i]<='Z' && a[i]>='A'))
        {nl++;if(banana==0){banana++;nc++;}}
        else banana=0;
    m=nl/nc;
    out << m << '\n';
    out.close();
    return 0;
}