#include<stdio.h>
int main()
{
    int cuvinte=0,lungimeText=0,rez=0;
    char c,d;
    FILE *f = fopen("text.in","r");
    {
        while( (c=fgetc(f)) != EOF )
        {
            if(c >= 'a' && c <= 'z' || c >= 'A' && c <= 'Z')
                rez++;
            else
            {
                if(rez!=0)
                {
                   lungimeText += rez;
                   cuvinte++;
                   rez = 0;
                }
            }
       }
        fclose(f);
    }
    f = fopen("text.out","w");
    {
        fprintf(f,"%d",lungimeText/cuvinte);
        fclose(f);
    }
 return 0;
}