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

int main(void)
{
    FILE *f=fopen("text.in","rt");
    FILE *g=fopen("text.out","wt");

    char *cuv,*text;

    fgets(text,1024*1024+1,f);

    cuv=strtok(text," -.,;:!?");

    int nr_cuv=0,nr_car=0;

    while(cuv!=NULL)
    {
        nr_cuv++;
        nr_car+=strlen(cuv);
        cuv=strtok(NULL," -.,;:!?");
    }
    printf("%d",nr_car/nr_cuv);
    fprintf(g,"%d",nr_car/nr_cuv);
    return 0;
}