a492. 數數字 | From: [192.168.120.33] | Post Date : 2025-06-23 08:27

a = int(input(""))
i = 0
for _ in range(a):
    i = i+1
    print(i)
    
for _ in range(i-1):
    i = i-1
    print(i)

 

a492. 數數字 | From: [192.168.120.33] | Post Date : 2025-06-24 18:06