def maxSubarray(arr):
    max_val = max(arr)
    if max_val <= 0:
        return max_val, max_val
    max_sum = 0
    cur_sum = 0
    for i in range(len(arr)):
        if cur_sum + arr[i] < 0:
            cur_sum = 0
            continue
        cur_sum += arr[i]
        max_sum = max(max_sum, cur_sum)
    return max_sum, sum([i for i in arr if i > 0])