题解 | #尼科彻斯定理#
尼科彻斯定理
http://www.nowcoder.com/practice/dbace3a5b3c4480e86ee3277f3fe1e85
while True:
try:
n = int(input())
res = 0
for i in range(n):
res += 2*i
base = int((n**3-res)/n)
opt = []
for i in range(n):
opt.append(str(base+2*i))
print('+'.join(opt))
except:
break
