#include<stdio.h>
using namespace std;
char c;long int litere,cuvinte;bool sw;
int main()
{
    FILE*fin=fopen("text.in","r");
    while(fscanf(fin,"%c",&c)!=EOF)
    {
        if(((c>='a')&&(c<='z'))||((c>='A')&&(c<='Z')))
        {
            litere++;sw=1;
        }
        else if(sw==1){cuvinte++;sw=0;}
    }
    fclose(fin);
    FILE*fout=fopen("text.out","w");
    fprintf(fout,"%d",litere/cuvinte);
    fclose(fout);
    return 0;
}