Code Festival D Compress numbers by shinh

:
s/^0\(.* \)0\?/\1/
/^ /{/ $/iYES
/\S/iNO
d}
s/ $/ 0/
h
y/0123456789/9012345678/
G
s/\(.\).* \(.\).*\n.\(.* \)./\1\3\2/
t

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

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