#include<stdio.h>
FILE *in,*out;
int i,litere,cuvinte;
char c,c_ant;
int main()
{
	in=fopen("text.in","rt");
	out=fopen("text.out","wt");
	while(!feof(in))
	{
		fscanf(in,"%c",&c);
		if(c>=65 && c<=90 || c>=97 && c<= 122)
			litere++;
		else
			if(c_ant>=65 && c_ant<=90 || c_ant>=97 && c_ant<=122)
				cuvinte++;	
		c_ant=c;
		
	};
	fprintf(out,"%d",litere/cuvinte);
return 0;
}