sed 'i{print(sum(i=!f(n,m)=lift(Mod( s/ /,m)^if(n,f(n-1,m=eulerphi(m))+m,1)),9,r!=r=f(i,/ a))" "r)}'|../s/gp
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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