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#2638: ans


1752786-4@g.puiching.edu.mo (林敬晉P5A08(JalenLam_progamer)(IQ...)

School : Pui Ching Middle School
ID : 3260
IP address : [192.168.120.33]
Last Login ：
2025-06-05 11:37:15
b397. 计算并联电阻 -- 一級 | From: [192.168.120.33] | Post Date : 2025-06-17 20:00

r1,r2 = map(float,input().split())

r = 1/(1/r1+1/r2)

print(f"{r:.2f}")

 
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