#include<stdio.h>
#include<string.h>
#include<string>

char v[5000];

int c,k,t,a;

void citire()
{
   gets(v);
}

bool spat(int &a)
{
   if((v[a]<=65)&&(v[a]>=90)&&(v[a]>=97)&&(v[a]<=122))
      return 1;
   return 0;
}

void count()
{
   for(int i=1;i<=t;i++)
   {
      if(spat(i)==1)
      {
        c++;
      }
   }
}

int main()
{
   
   freopen("text.in","r",stdin);
   freopen("text.out","w",stdout);
   
   citire();
   
   t=strlen(v);
   count();
   printf("%d",t/c);
   
   return 0;
}