function playingWithNumbers(arr, queries) {
    // Write your code here
    let sum = 0;
    let other = [];
    arr.forEach(n => {
        if (n < -2000 || n > 2000) {
            sum += Math.abs(n);
        }
        else {
            other[n + 2000] = (other[n + 2000] || 0) + 1;
        }
    });
    let xx = 0;
    return queries.map(x => {
        xx += x;
        return other.reduce((acc, c, n) => acc + Math.abs(n - 2000 + xx) * c, sum);
    });
}

typedef uint64_t result_t;

/* This structure stores info about each element in dara `arr`.
 * There exist, as much, 4001 different values as
 *   -2000 <= arr[i] <= 2000
 */
struct point
{
	int value;
	int freq;
};
typedef struct point point_t;

/* Calculates the result of query `q` applied over arr */
result_t calculateQueryResult(size_t sample_len, point_t* restrict sample, const int q)
{
    result_t abs_sum = 0;
    
    for (size_t i = 0; i < sample_len; i++) {
	    abs_sum += sample[i].freq * abs(sample[i].value += q);
    }
    return abs_sum;
}

/** This maps a value into an index of the array of samples */
#define map(value) (2000 + (value))

/* This builds the sample from array `arr`: values and number 
 * of occurrences for each
 */  
void characterizeSample(size_t arr_count, int* restrict arr, size_t sample_len, point_t *sample) {
	size_t i, j;
	for (j = 0; j < sample_len; j++) {
		sample[j].freq = 0;
	}
	for (i = 0; i < arr_count; i++) {
		j = map(arr[i]);
		sample[j].value = arr[i];
		++sample[j].freq;
	}
}

/*
 * Complete the 'playingWithNumbers' function below.
 *
 * The function is expected to return an INTEGER_ARRAY.
 * The function accepts following parameters:
 *  1. INTEGER_ARRAY arr
 *  2. INTEGER_ARRAY queries
 */

result_t* playingWithNumbers(size_t arr_count, int* restrict arr, size_t queries_count, int* restrict queries, size_t* result_count) {
	*result_count = queries_count;

	// dynamically allocate space for vector `result`
	if (arr_count <= 0 || queries_count <= 0) { return NULL; }
	result_t *result = (result_t *)calloc(queries_count, sizeof(result_t));
	assert(result);
	
    // initial sum of the array
    result_t r = 0;
	size_t j;
	
	// characterize sample: compute frequency of each value
	int sample_len = 4001;
	point_t sample[4001];
	characterizeSample(arr_count, arr, sample_len, sample);
	
    for (j = 0; j < queries_count; j++) {
        result[j] = calculateQueryResult(sample_len, sample, queries[j]);
    }
    
    return result;
}