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  1. x=0;(0..9**6).each{|e|x+=(-1.0)**e/(2*e+1)*4}; p x
Success #stdin #stdout 0.55s 7408KB
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3.141590771916799
https://ideone.com/h0gZ7m
language:
Ruby (ruby 2.5.5)
created:
10 years ago
visibility:
secret

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