1
a = ((1 7) 6 ((8 3) 4))
2
a = (1 b)
b = (4 a)
1
a = (a a a)
3
a = (1 b c)
b = (a 2 c)
c = (a b 3)
5
a = (e (15 d (57 a) (45 (75 c))) b 189)
b = (d (a -29 30) ((b c)) ((51 a) (a 67) (e 79) (e a)))
c = (((d)))
d = (-1 (-98) ((a) c) (d e e (-81) ((a))) 58 (b))
e = (a b c d a b c d a b c d a b c d a b c d a b c d)
2
a = (1 (2 (3 (4 (5 (6 (7 (8 (9 (10 (11 (12 (13 (14 (15 b)))))))))))))))
b = (b b)
5
a = ((((((((((((((a))))))))))))))
b = (13 17 18 b d)
c = (a b c d)
d = (b 8 (d 7))
e = ((e) ((7)) (((((e))))))
7
a = ((4 5) 2 ((1 3) 7))
b = (9)
c = ((((((((((((((((((((((((((((((((((((99))))))))))))))))))))))))))))))))))))
d = ((1)(1)(1))
e = (1 (2 (3 (4 (5 (6 (7 (8 (9 (10 20))))))))))
f = (-1 1)
g = (-1 -2 -3 -4 -5 -6 1998 -1111)
2
a    =   (    17    (    18     b  ))                
b  =           (      -19            a       (    8  a   )    ( 4   9))   
26
a = ((-17 a) (z (z 3)))
b = (b 8 c g i h j)
c = ((a c m) (p r o g r a m m i n g) (c o n t e s t))
d = (1 6 (1 6 (1 6 (1 6 d d))))
e = ((((f)) g) h)
f = (17 18 19 (20 21))
g = (((((7 (n) 8))) 9 b d))
h = (((((((1 2 3 4 5 6 7 8) (8 7 6 5 4 3 2 1)))))))
i = (((((h a c)))))
j = ((1) (11) (1998))
k = ((((((((k l))))))))
l = (l k)
m = (1 9 2 0 -1)
n = (0 e)
o = (o h n o (8))
p = (0 0 0 0 0 0 0 0 0 0 0 0 0 0 p p p p p p p p p p p p p p)
q = ((((((((w))))))))
r = (m c m)
s = (1 p 1 p 1 p 1 p s s s s s s s o m)
t = (a d f e g t s r p)
u = (u v w x y z)
v = (a a a a v v v v)
w = ( w y w y )
x = ((2) m o r e)
y = (q)
z = (1 -9 9 -8)
0