#include <stdio.h>

inline int lit(char c)
{
	return ((c>='a' && c<='z')||(c>='A' && c<='Z'));
}
int main()
{
	char a;
	int m=0,cuv=0;
	int s=0;
	freopen("text.in","r",stdin);
	freopen("text.out","w",stdout);
	while (scanf("%c",&a)!=EOF)
	{
		if (lit(a)==1)
		{
			m=m+1;
			if (s==0)
			{
				s=1;
				cuv=cuv+1;
			}
		}
		else s=0;
	}
	printf("%d",(m/cuv));
}