Move 1988-2004 entries into subdirs

We we move 1988-2004 entries from all of a year's winning entries
in a single directory to each winner being in their own sub-directory
under the given year directory.

1989/robison/robison.c

@@ -0,0 +1,33 @@
+ typedef struct A*B,*(*C)();struct A{C(*d)();B e;}*v(),*b;C n[256];
+# include <stdio.h>
+#define a (d->e)
+#define o (B)printf
+#define X(_){return _;}
+#define Y(_,A)B _(d,e)B d,e;X(A)
+#define Z(P)C P(f,g,h,i)C f,g,h,i;X(P)
+#define c(_)(b=(B)malloc(sizeof(*b)),b->d=_,b->e=d,b)
+#define _(D,E,F,G,H)B D();Y(D/**/f,E)Y(D/**/g,F)Y(D/**/h,G)Y(D/**/i,H)Y(D,(*(*d->d)(D/**/f,D/**/g,D/**/h,D/**/i))(d,e))
+Z(f)
+Z(g)
+Z(h)
+Z(i)
+_(j,d,d,j a,j a)
+_(k,d,c(h),c(h),c(h))
+_(l,c(i),d,c(i),c(i))
+_(m,c(g),c(f),l(m a),k(m a))
+_(p,d,l(m(d)),k(p a),l(m a))
+_(q,l(p(d)),m(d),l a,k(q a))
+_(r,m(d),k(mf a),l(r a),k a)
+_(s,d,e,o("0",s a),o("1",s a))
+_(t,d,p(e),k(t(a,e)),v(k(t(a,e)),e))
+_(u,k(e),l(r(e)),k(v(a,e)),l(v(a,e)))
+_(v,e,r(e),u(e,a),u(q(e),a))
+_(w,o("0"),d,s(d),s(d))
+_(x,(*n[getchar()])(d),o("-1"),w(p(d,o("-"))),xh(d))
+_(y,xf(mg()),v(d,p(yf())),v(d,yf()),t(d,yf()))
+_(z,xf(yf()),(*(*j(d)->d)(w,x))(d),xf(k(d)),xf(l(d)))
+main(){
+n['(']=zf;n['x']=yi;n['-']=yg;
+n['+']=yh;n['0']=zh;n['1']=zi;
+n[' ']=xf;n[')']=n['\n']=kf;
+o("\n",zg(yf()));}