题解 | #尼科彻斯定理#
尼科彻斯定理
https://www.nowcoder.com/practice/dbace3a5b3c4480e86ee3277f3fe1e85
import sys
def solu(a ):
return list(range(1, sum( list(range(1, a + 1)) ) * 2 + 1, 2))[-a:]
for line in sys.stdin:
a = int(line.strip())
print("+".join(map(str, solu(a) )) )
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