def sum_arr(n):
res = 0
for x in n:
res += x
return res
nums = [52345,746587,98589,54398,9348,45887,49856]
test = sum_arr(nums)
if test == sum(nums):
print("Sum of arr: {}".format(test))
else:
print("Func dosen't work!")
# Most simple algorithm ever! Isn't it!