#include<stdio.h>
#include<string.h>
int az(char a)
{
    if(a>='a'&&a<='z') return 1;
    return 0;
}
int AZ(char a)
{
    if(a>='A'&&a<='Z') return 1;
    return 0;
}
int main()
{
    int nc=0,i,nl=0,ok=0,ans,n=0;
    char ch;
    freopen("text.in","r",stdin);
    freopen("text.out","w",stdout);
    while(scanf("%c",&ch)!=EOF)
      if(az(ch)||AZ(ch)) 
      {
        nl++;
        if(!ok) nc++;
        ok=1;
      }
      else ok=0;
    ans=nl/nc;
    printf("%d\n",ans);
    return 0;
}