# define S(M, L, N,  R) J(M, P) (L, N, R )
# define QL(L, R)/*  L,*/QR(L, /*N,*/ R)//
# define P(   L, N,  R)     L,   N,    R//
# define LP(  L, N,  R)   U L, D L, (N, R)
# define R( L, R)W   (Y(J(E,X)(K(L, R ))))

# define RP(  L, N,  R)(L, N), H R, T  R//
# define HP(  L, N,  R)          L, N, R//
# define K( L, R)/*  L,*/J(F, V)(L, R)J  \
( Q,sym_ (  K, M  (  L, B R)))  (L, R    )
# define Q( L, R)/*  L,*/QR(L, /*N,*/ R)//

# define E( X)E3(X)
# define break  H ,
# define E0(/**/X)X
# define I( X, E) K
# define EX(X)E3(X)






#define E1(_I_)E0  (E0(E0(E0(E0(E0(E0  (E0( _I_ ))))))))
#define E2(_O_)E1  (E1(E1(E1(E1(E1(E1  (E1( _O_ ))))))))
#define E3(_C_)E2  (E2(E2(E2(E2(E2(E2  (E2( _C_ ))))))))

#define E4(_C_)E3  (E3(E3(E3(E3(E3(E3  (E3( _C_ ))))))))
#define E5(_C_)E4  (E4(E4(E4(E4(E4(E4  (E4( _C_ ))))))))
#define E6(_2_)E5  (E5(E5(E5(E5(E5(E5  (E5( _2_ ))))))))

#define E7(_0_)E6  (E6(E6(E6(E6(E6(E6  (E6( _0_ ))))))))
#define E8(_1_)E7  (E7(E7(E7(E7(E7(E7  (E7( _1_ ))))))))
#define E9(_5_)E8  (E8(E8(E8(E8(E8(E8  (E8( _5_ ))))))))

#define QS( L, R)  (S (M(   L, B R),\
A R , A J(G(L, _)  ,B R),   C    R ))
#define QR( L, R)  I sym_(,)(O, (C, \
C))  (C J(G(L, _)  ,B R),QS(L, R   ))






#define  sym__(_  , __ ) _
#define  A(A,  B  ,  C ) A
#define  F(A, _)  sym_(_,)

#define  sym_(__  , _  ) _
#define  B(A,  B  ,  C ) B
#define  J(A, J)  G(A,  J)

#define  sym___(  ___, __)
#define  C(A,  B  ,  C ) C
#define  G(J, G)  J  ##  G

#define  RY(Y) Y
#define  Y( Y) Y
#define  LY(Y) Y






# define Z( L, R)  J (B L,  /*N,*/ Y)
# define N( L, R)  J (G(L,   _), B R)
# define HY(L   )  (A   L,   halting)
# define T( R, L)  G(sym_, R)(L, (,))
# define H( R, L)  G(sym_, R)(R,  _ )

# define M( L, R)  B J( G(L, _),  R )
# define D( L, R)  G(sym_, R)(R,  _ )
# define U( L, R)  G(sym_, R)(L, (,))
# define F0(L, R)  F(   L,  /*N,*/R )
# define F1(L, R)  F0(  L,  /*N,*/R)~

# define F2(L, R)  F1(  L,  /*N,*\R)~
# define F3(L,*/R  )R\t<L[B R]>\t-> \
Z (/*)*/ N( L, R)  , R) (N( L, R) )\n
# define FV(L, R)  F(   L,  /*N,*/R )
# define QH(L, R)  QS(  L,  /*N,*/ R)

int puts (char*);
# define W(W)O(W)
int main () {puts
# define O(W)#W//
( R ( A, tape));}