#include <stdio.h>
#include <string.h>
#include <ctype.h>
FILE *in=fopen("text.in","r"), *out=fopen("text.out","w");
int main()
{
	int lm=0,cuv=0; char c;
	while (!feof(in))
	{
		c=fgetc(in);
		if(isalpha(c))
		{
			++cuv;
			while(isalpha(c))
			{
				lm=lm+1;
				c=fgetc(in);
			}
		}
	}
	fprintf(out,"%d",lm/cuv);
	printf ("lm=%d, cuv=%d",lm,cuv);
	fclose(in);
	fclose(out);
}