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

char v[500000];

int c=1,k,t,a;

void citire()
{
	scanf("%s",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;
}