#include<stdio.h>
#include<string.h>
char x;
int ok,i,cnt,cnt2;
int main()
{
    freopen("text.in","r",stdin);
    freopen("text.out","w",stdout);
    while(scanf("%c",&x))
    {
        if(ok)
        {
            if((x>='a'&&x<='z')||(x>='A'&&x<='Z')) cnt++;
            else ok=0;
        }
        else
        {
            if((x>='a'&&x<='z')||(x>='A'&&x<='Z'))
                {
                    cnt2++;
                    cnt++;
                    ok=1;
                }
        }
    }
    printf("%d\n",cnt/cnt2);
    return 0;
}