#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include<ctype.h>
int main()
{
    FILE *f=fopen("text.in","r"),*p=fopen("text.out","w");
    char c=' ',a= ' ';
    int l=0,nr=0;
    while(!feof(f)){
        c=fgetc(f);
        if(isalpha(c)) l++;
            else if(isalpha(a)) nr++;
        a=c;
    }
     if(nr>0) fprintf(p,"%d",l/nr);
        else fprintf(p,"0");
     fclose(f);
     fclose(p);
     return 0;
}