Sum Adjacent Equal Numbers

nums = [float(item) for item in input().split(" ")]

i = 0
while i != len(nums):
    if len(nums) == 1:
        break
    f = nums[i - 1]
    s = nums[i]
    if f == s:
        nums[i] = f + s
        nums.remove(nums[i - 1])
        i = 0
    i += 1

if len(nums) <= 1:
    print(nums[0])
else:
    print(" ".join(map(str, nums)))