题解 | #尼科彻斯定理#

import sys

a1 = int(input())

a3= a1*a1*a1
aaa=[]
bbb=""
jjj=0
for j in range(0,a1):
        jj=j*2
        jjj+=jj
for i in range(1,10000): #绷不住了的枚举法，居然能过
    if a1*i+jjj == a3:
        for j in range(a1):
            aa=i+j*2
            aaa.append(str(aa))
bbb = "+".join(aaa)
print(bbb)