John Tromp scooped "Most Functional" in the 2012 International Obfuscated C contest!
Int L[A],m,b,*D=A,
*c,*a=L,C,*U=L,u;s
(_){u--&&s(a=*a);}
char*B,I,O;S(){b=b
--?b:m|read(0,&I,1
)-1;return~I>>b&1;
}k(l,u){for(;l<=u;
U-L<A?*U++=46^l++[
"-,&,,/.--/,:-,'/"
".-,-,,/.-,*,//..,"
]:exit(5));}p(Int*m){
return!*U?*m=S()?U++,!S
()?m[1]=p(++U),2:3:1,p(U)
:S()?U+=2:p(U[1]++),U-m;}x(
c){k(7*!b,9);*U++=b&&S();c&&x
(b);}d(Int*l){--l[1]||d(l[d(*l),
*l=B,B=l,2]);}main(e){for(k(10,33
),a[4]-=m=e-2&7,a[23]=p(U),b=0;;e-2
?e?e-3?s(D=a),C=a [3],++1[a=a[2]],d(
D):c?D=c,c=*D,*D= a,a=D:exit(L[C+1])
:C--<23?C=u+m&1?O =O+O|C&1,9:write(m
||(O=C+28),&O,1)+ 1:(S(),x(0<b++?k(0,
6),U[-5]=96:0)):( D=B?B:calloc(4,X))
?B=*D,*D=c,c=D,D[ 2]=a,a[++D[1]]++,D
[3]=++C+u:exit(6) )e=L[C++],u=L[C];}
I don't know the name of the program(this is the obfuscated C contest after all...), but I think it's the Lambda beast.
And suddenly the Subversion octopus does not look quite as scary anymore, relatively speaking (however, no easier at all!) If the 'Lamda beast' was a song, I think it would sound like this:
Gratz John, and thank you for a lovely coding perl!
