#include <stdio.h>
#include <string.h>

int main(){
    FILE *f1,*f2;
    f1=fopen("text.in","r");
    f2=fopen("text.out","w");
    long len,cuv,k;
    char ch;
    len=0;
    cuv=0;
    k=0;
    while(fscanf(f1,"%c", &ch)!=EOF){
        if (('a'<=ch&&ch<='z')||('A'<=ch&&ch<='Z')){
           len++;
           if (!k)cuv++;
           k=1;
        }
        else k=0;
    }
    len=len/cuv;
    fprintf(f2,"%ld\n",len);
    fclose(f1);
    fclose(f2);
    return 0;
}