Difference of by uru

var s:string;l:word=10;begin
read(s);repeat
writeln(s:l);dec(l);for l:=1to l do s[l]:=chr(abs(ord(s[l])-ord(s[l+1]))+48)until 1=0end.

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

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