#include <stdio.h>

void rearrange(double *arr, int n) {
    double key;
    for (int i = 1, j = 0; i < n; i++) {
        key = arr[i];
        if (key > 0)
            continue;
        j = i - 1;
        while (j >= 0 && arr[j] > 0) {
            arr[j + 1] = arr[j];
            j = j - 1;
        }
        arr[j + 1] = key;
    }
}

int main(void) {
    double arr[] = { -1/6.0, 2/6.0, -3/6.0, 4/3.0, 5/3.0, 6/3.0, -7/3.0, 8/3.0, 9/3.0 };
    int n = sizeof(arr) / sizeof(arr[0]);

    for (int i = 0; i < n; ++i)
        printf("%.6lf ", arr[i]);
    printf("\n");

    rearrange(arr, n);

    for (int i = 0; i < n; ++i)
        printf("%.6lf ", arr[i]);
    printf("\n");
    return 0;
}