def return_bigger(a,b):

    if a>b:

        return a

    else:

        return b


result = 0

for i in range(0,len(list)):

    tmp = list[i]

    result = return_bigger(result, tmp)    

    for a in range(i+1, len(list)):

        tmp = tmp + list[a]

        result = return_bigger(result, tmp)

print str(result)