10 lines
182 B
Python
10 lines
182 B
Python
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n=int(input("请输入借书天数"))
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s=0
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if n<1:
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print("您输入的借书天数有错")
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else:
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if n==1:
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s=2
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else:
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s=2+(n-1)*0.8
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print(round(s),"元")
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