Japanese numeral for Ruby kaigi by gugod (kaigi)

U='\xe5\x80\x8b\xe5\x8d\x81\xe7\x99\xbe\xe5\x8d\x83'
D='\xe9\x9b\xb6\xe4\xb8\x80\xe4\xba\x8c\xe4\xb8\x89\xe5\x9b\x9b\xe4\xba\x94\xe5\x85\xad\xe4\xb8\x83\xe5\x85\xab\xe4\xb9\x9d'
$<.each{|l|v=-2;l.scan(/([#{D}])?([#{U}]|$)/u){|m|v+=D.index($1||"\xe4\xb8\x80")/3*10**(U.index($2)/3)};p v}

Note that non-ascii characters in the above source code will be escaped (such as \x9f).

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