1999
1
=
19
−
9
−
9
2
=
1
⋅
9
+
9
9
3
=
9
+
9
9
+
1
4
=
19
−
9
−
9
!
5
=
9
−
19
−
9
6
=
(
9
9
+
1
)
⋅
9
7
=
19
−
9
−
9
8
=
99
−
91
9
=
1
⋅
9
−
9
+
9
10
=
91
−
9
⋅
9
11
=
99
⋅
1
9
12
=
99
9
+
1
13
=
19
−
9
+
9
14
=
199
−
9
15
=
9
−
1
⋅
9
+
9
16
=
19
−
9
9
17
=
9
−
1
9
+
9
18
=
19
−
9
9
19
=
19
−
9
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9
20
=
9
9
+
19
21
=
1
⋅
9
+
9
+
9
22
=
9
9
+
19
23
=
9
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−
1
+
9
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9
24
=
(
9
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1
9
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9
25
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19
−
9
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9
26
=
9
−
1
+
9
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9
27
=
1
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+
9
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9
28
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9
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19
29
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9
⋅
9
−
1
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9
30
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(
19
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9
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⋅
9
31
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19
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9
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9
32
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99
9
−
1
33
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99
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9
34
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99
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1
35
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19
36
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19
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9
37
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19
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9
38
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9
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9
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1
42
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9
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9
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47
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48
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9
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1
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1
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1
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9
58
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60
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19
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61
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9
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19
62
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9
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19
63
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9
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1
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9
64
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91
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9
65
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(
9
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1
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9
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9
66
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69
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9
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9
70
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9
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71
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9
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72
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(
9
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9
73
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91
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9
74
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9
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1
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75
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99
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(
1
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9
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!
76
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91
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9
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77
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9
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9
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1
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9
78
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1
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9
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9
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9
79
=
91
−
9
−
9
80
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99
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19
81
=
9
9
9
+
1
82
=
91
−
9
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9
83
=
9
⋅
9
−
1
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9
84
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(
19
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9
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9
85
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91
−
9
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9
86
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9
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9
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1
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9
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87
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(
1
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9
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9
−
9
88
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91
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9
9
89
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99
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1
−
9
90
=
(
19
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9
)
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9
91
=
91
−
9
+
9
92
=
9
9
+
91
93
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99
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1
−
9
!
94
=
9
9
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91
95
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99
−
1
−
9
96
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99
⋅
1
−
9
97
=
91
−
9
+
9
98
=
99
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1
9
99
=
1
9
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99
100
=
9
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9
+
19