#include <stdio.h>
#include <ctype.h>
int lung,co;
int main()
{
    FILE*fin,*fout;
    fin=fopen("text.in","r");
    fout=fopen("text.out","w");
    char ch,prev=0;
    while((ch=fgetc(fin))!=EOF)
    {
        if(isalpha(ch))
            lung++;
        else
            if(isalpha(prev))
                co++;
        prev=ch;
    }
    fprintf(fout,"%d",lung/co);
    fclose(fin);
    fclose(fout);
    return 0;
}