题解 | #尼科彻斯定理#

while True:
    try:
        n = int(input())
        res, nums = n ** 3, []
        for i in range(1, res, 2):
            nums.append(i)
        for i in range(len(nums)-n):
            if sum(nums[i:i+n]) == res:
                print('+'.join(list(map(str, nums[i:i+n]))))
                break
    except:
        break