# by Artyom Bologov
H
,p
g/./s/\(.\{0,1\}\)\(.\{0,1\}\)\(.\{0,1\}\)\(.\{0,1\}\)\(.\{0,1\}\)\(.\{0,1\}\)\(.\{0,1\}\)\(.\{0,1\}\)\(.\{0,1\}\)/\9\8\7\6\5\4\3\2\1/
,p
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