题解 | 尼科彻斯定理
import sys while True: try: n = int(input()) l = [n**2-n+1+2*i for i in range(n)] resu = "+".join(map(str,l)) print(resu) except: break
import sys while True: try: n = int(input()) l = [n**2-n+1+2*i for i in range(n)] resu = "+".join(map(str,l)) print(resu) except: break
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