#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define max 10000
int calc(char* s);

int main()
{
    FILE* in = fopen("text.in","r");
    FILE* out = fopen("text.out","w");

    char *s = (char*)malloc(sizeof(char)*max);

    fgets(s,max,in);
    printf("%s",s);

    int c = calc(s);
    fprintf(out,"%d",c);
    return 0;
}

int calc(char* s){

    int nrWords=0;
    int length = 0;

    char * tok = strtok(s," `~1234567890!{@#$%^&**()-}|\":+?=><,./;'[]\"");

    while(tok!=NULL){
        length += strlen(tok);
        nrWords++;
        tok=strtok(NULL, " `~1234567890!{@#$%^&**()-}|\":+?=><,./;'[]\"");
    }

    return length/nrWords;

}