#include <cstdio>
#include <cstdlib>
using namespace std;



int main()
{
    freopen("text.in","r",stdin);
    freopen("text.out","w",stdout);
    int k,length=0,cuv=0;
    char c;
    while(c!='\n')
    {
                  scanf("%c", &c);
                  if(c=='\n') break;
                  if((c>='a' && c<='z') || (c>='A' && c<='Z'))
                  {
                             length++;
                             if(k==0) cuv++;
                             k=1;
                  }else
                  {
                       k=0;
                  }
    }
    printf("%i\n", length/cuv);
    int i;
    scanf("%i", &i);
    return 0;
}