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题解 | 纠错4

SELECT cust_name, cust_contact, cust_email FROM Customers WHERE cust_state = 'MI' UNION SELECT cust_name, cust_contact, ...

2025-10-20

0 22

题解 | 无限长正整数排列字符串

def Sn(n): if n>=1: S=((9*n-1)*(10**n)+1)//9 elif n==0: return 0 else: print("Fuck!!!!!!!!!!") ...

2025-09-28

0 24

题解 | 添加逗号

n=input() cnt=(len(n)-1)//3 if cnt>=1: st=len(n)%3 i=0 while(i<=len(n)-1): if i%3==st and cnt>=1 and i!=0: cn...

2025-09-28

0 31