#include<fstream>
#include<cstring>
using namespace std;

ifstream f("text.in");
ofstream g("text.out");

char exp;

int main()
{
 int rez,l=0,cuv=0,ok=0;
  f>>exp;
 while(f.get(exp))
{
    if(exp>='a' && exp<='z' || exp>='a' && exp<='z')
    {
        ok=1; l++;

        }
 else if(ok==1)
{

    cuv++;
ok=0;

    }
    }
rez=l/cuv;
g<<rez;
f.close();
g.close();
return 0;
    }