#!ruby -na q,a,b=$F.map &f=proc{|x|$*[x=x.to_i]=x==(t=$*[x]||x)?x:f[t]} /^1 /?puts(a==b ?:YES:'NO'):$*[a]=b
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
download
return to the top page