Aurna's Problem

#include <stdio.h>

int main() {
    int n;
    scanf("%d", &n);
    int arr[n], brr[n];
    for (int i = 0; i < n; i++) {
        scanf("%d", &arr[i]);
    }

    int flag = 0, product = 1, size = 0;

    for (int i = 0; i < n; i++) {
        if(flag == 3) {
            flag = 0;
            brr[size] = product;
            size++;
            printf("%d ", product);
            product = 1;
        }
        product *= arr[i];
        flag++;
    }
    printf("%d\n", product);
    brr[size] = product;
    size++;
    double x;
    for (int i = 0; i < size; i++) {
        x += (1.0 / brr[i]);
    }
    printf("%lf\n", x);
}