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2*2行列を数値として処理するRuby ref: https://qiita.com/DrqYuto/items/57421b1bf4c2dc3e6c4f
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| x = readlines.map{|line| line.chomp.split(/\s/).map(&:to_i)} | |
| puts x.map{|row| row.map{|i| i+1} }.map{|row| row.join(" ")}.join("\n") | |
| =begin | |
| 1 1 | |
| 1 1 | |
| が | |
| 2 2 | |
| 2 2 | |
| =end |
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