#include<stdio.h>
#include<string.h>
char x;
int w,ok,i,cnt,cnt2;
int main()
{
	freopen("text.in","r",stdin);
	freopen("text.out","w",stdout);
	while(scanf("%c",&x)+1)
	{
		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;
}