#include<stdio.h>



int main()
{FILE *f,*g;
int media=0,i=0;
char c,d;

f=fopen("text.in","r");

c=fgetc(f);
if( ((c>='A') && (c<='Z')) || ((c>='a') && (c<='z')) )
		media++;
while(!feof(f))
	{d=c;
	 c=fgetc(f);

	 if( ((c>='A') && (c<='Z')) || ((c>='a') && (c<='z')) )
		media++;
	 else
		if( ((d>='A') && (d<='Z')) || ((d>='a') && (d<='z')) )
			i++;


	}
media/=i;
fclose(f);
g=fopen("text.out","w");
fprintf(g,"%d",media);
fclose(g);
return 0;
}