#include<stdio.h>
char c;
long int cuv,litere,cuvinte,sol;
int main()
{
	FILE *f=fopen("text.in","rb");
	while(fscanf(f,"%c",&c)!=EOF)
	{   if((('a'<=c)&&('z'>=c))||(('A'<=c)&&('Z'>=c)))
	    { litere++;
	      if(!cuv)cuv=1;
	    }
	    else
	    {cuvinte+=cuv;cuv=0;}
	}
	cuvinte+=cuv;
	fclose(f);
	f=fopen("text.out","w");
	sol=litere/cuvinte;
	fprintf(f,"%ld\n",sol);
	fclose(f);
	return 0;
}