#include <stdio.h>

int main() {
    FILE *in = fopen("text.in", "r");
    FILE *out = fopen("text.out", "w");
    int litere = 0, cuvinte = 0, toggle = 1;
    char c;
    while(1){
        c = fgetc(in);

        if((c>='a' && c<='z') || (c>='A' && c<='Z') ) {
            litere++;
            if(toggle){
                cuvinte++;
                toggle=0;
            }
        } else {
            toggle = 1;
        }

        if(c==EOF) break;
    }
    fprintf(out, "%d", litere/cuvinte);
}