#include<stdio.h>
char c;
int n,k,med;
int main()
{
	FILE *f = fopen("text.in","r");
	while(!feof(f))
	{
		fscanf(f,"%c",&c);
		if((c>='a' && c<='z') || (c>='A' && c<='Z')) 
		{
			k++;
			while(((c>='a' && c<='z') || (c>='A' && c<='Z')) && !feof(f)) 
			{
				n++;
				fscanf(f,"%c",&c);
			}
		}
	}
	fclose(f);
	if(k==0)
		return 1;
	med=n/k;
	FILE *g = fopen("text.out","w");
	fprintf(g,"%d",med);
	fclose(g);
	return 0;
}