fix_sub_array_problem.py

s = raw_input().split(',')

s = map(int, s)

max_sum = 0
max_so_far = 0
left_i = 0
right_i = 0

#check all elements in the given list are positive
def all_positive(s):
	return filter(lambda x: x > 0, s) == s

#check all elements in the given list are negative
def all_negative(s):

	return filter(lambda x: x < 0, s) == s


if all_negative(s):
	print max(s)

elif all_positive(s):
	print ','.join(map(str, s))
else:
	for i in range(1, len(s)):
	    if max_sum <  0:
	        left_i = i
	        max_sum = s[i]
	    else:
	        max_sum += s[i]

	    if (max_sum> max_so_far):
	        right_i = i
	        max_so_far = max_sum;

	s = s[left_i:right_i+1]