#include<iostream>
#include<fstream>
#include<string>
using namespace std;
int c=0;
string sir;
int fct1()
{
 ifstream in("text.in");
 while(getline(in, sir))
 c++;
 in.close();
 return c;
 }
 int main()
{
 c=fct1();
 int c2=0,i,i2,div=1,res;
 ifstream in("text.in");
 ofstream out("text.out");
 for(i=1;i<=c;i++)
 {
  getline(in, sir);
   for(i2=0;i2<=sir.length();i2++)
   {
    if((sir[i2]>='a'&&sir[i2]<='z')||(sir[i2]>='A'&&sir[i2]<='Z'))
    c2++;
    if(sir[i2]==' ')
    div++;
    }
  }
 cout<<c;
 res=c2/div;
 out<<res;
}