#include <stdio.h>

int main(){

FILE *file1, *file2;
char c, lastChar = '\0';
int letters=0, words=0;

file1 = fopen("text.in", "r");
file2 = fopen("text.out", "w");

while(1){
    c=fgetc(file1);

    if(isalpha(c))
        letters++;

    if(!(isalpha(c))&&isalpha(lastChar))
        words++;

    lastChar = c;

    if(c==EOF)
        break;
}

fprintf(file2, "%d", letters/words);

return 0;
}