题解 | #尼科彻斯定理#
尼科彻斯定理
https://www.nowcoder.com/practice/dbace3a5b3c4480e86ee3277f3fe1e85
while True:
try:
m = int(input())
a = []
for i in range(m * (m - 1) + 1, m * (m + 1), 2):
a.append(i)
for i in a:
if i == a[-1]:
print(i)
else:
print(i, end="+")
except:
break
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