题解 | #尼科彻斯定理#

num=int(input())
end=num*num*num
avg=end/num
if num%2==1:
    count=int(num/2)
    start=avg-2*count
    for i in range(num):
        if i==num-1:
            print(int(start))
        else:
            print(int(start),end="+")
        start+=2
else:
    count=num/2-1
    start=avg-2*count-1
    for i in range(num):
        if i==num-1:
            print(int(start))
        else:
            print(int(start),end="+")
        start+=2