#include<cstdio>
#include<cstring>
#include<ctype.h>
char c,cc;
int p,n,m,i,j;
int main()
{
	freopen("text.in","r",stdin);
	freopen("text.out","w",stdout);
	scanf("%c",&c);
	while(cc!=c)
	{
		if(isalpha(c))
		{
			p=1;
			m++;
			i=0;
		}
		else
			if(p==1)
			{
				
				n++;
				p=0;
			
			}
		cc=c;
		scanf("%c",&c);
	}
	printf("%d",m/n);
	return 0;
}