题解 | #尼科彻斯定理#

# !/usr/bin/env python3
# -*- coding: utf-8 -*-
__author__ = 'tianyi'
__date__ = '2024/3/20 23:31 '
__file__ = 'HW_HJ76.py'

num = int(input().rstrip())
n = 0
for x in range((num - 1) * 2, 0, -2):
    n += x
for i in  range(100*100*100):
    if i*num+n == num*num*num and i%2!=0:
        print("+".join([str(x) for x in range(i,i+num*2,2)]))
        break

通过 range((num - 1) * 2, 0, -2) 把第一个奇数构成的i*num+n总和算出来很关键