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hamakn/hoge.rb

Created October 6, 2015 05:57
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hoge.rb
['+', '-', ''].repeated_permutation(8).each do |p|
arr = []
(1..9).each do |i|
arr << i
arr << p.shift
end
str = arr.join
ans = eval(str)
p str if ans == 100
end
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