1777
1
=
17
7
−
7
2
=
1
⋅
7
+
7
7
3
=
17
−
7
−
7
4
=
17
−
7
7
5
=
7
−
(
7
7
+
1
)
6
=
77
−
71
7
=
1
⋅
7
−
7
+
7
8
=
(
1
7
)
7
+
7
9
=
7
7
+
1
+
7
10
=
77
7
−
1
11
=
77
⋅
1
7
12
=
77
7
+
1
13
=
7
−
1
7
+
7
14
=
(
7
7
+
1
)
⋅
7
15
=
71
−
7
+
7
16
=
17
−
7
7
17
=
17
−
7
+
7
18
=
7
7
+
17
19
=
7
!
7
+
7
+
1
20
=
7
−
1
+
7
+
7
21
=
1
⋅
7
+
7
+
7
22
=
71
−
7
⋅
7
23
=
?
24
=
7
⋅
7
+
17
25
=
?
26
=
?
27
=
?
28
=
?
29
=
?
30
=
?
31
=
17
+
7
+
7
32
=
7
⋅
7
−
17
33
=
?
34
=
?
35
=
(
7
−
1
)
⋅
7
−
7
36
=
?
37
=
?
38
=
?
39
=
?
40
=
?
41
=
7
⋅
7
−
1
−
7
42
=
(
7
−
1
7
)
⋅
7
43
=
7
⋅
7
+
1
−
7
44
=
?
45
=
?
46
=
?
47
=
?
48
=
7
⋅
7
−
1
7
49
=
7
7
7
+
1
50
=
1
7
+
7
⋅
7
51
=
?
52
=
?
53
=
?
54
=
?
55
=
7
⋅
7
−
1
+
7
56
=
71
−
7
⋅
7
57
=
71
−
7
−
7
58
=
?
59
=
?
60
=
77
−
17
61
=
?
62
=
?
63
=
(
1
+
7
)
⋅
7
+
7
64
=
71
−
7
⋅
7
65
=
?
66
=
7
⋅
7
+
17
67
=
?
68
=
?
69
=
77
−
1
−
7
70
=
(
17
−
7
)
⋅
7
71
=
71
−
7
+
7
72
=
7
7
+
71
73
=
?
74
=
?
75
=
?
76
=
77
−
1
7
77
=
1
7
⋅
77
78
=
1
7
+
77
79
=
?
80
=
?
81
=
?
82
=
?
83
=
77
−
1
+
7
84
=
77
⋅
1
+
7
85
=
71
+
7
+
7
86
=
?
87
=
?
88
=
?
89
=
?
90
=
7
!
(
1
+
7
)
⋅
7
91
=
(
7
−
1
+
7
)
⋅
7
92
=
?
93
=
?
94
=
17
+
77
95
=
?
96
=
?
97
=
(
7
+
7
)
⋅
7
−
1
98
=
(
1
⋅
7
+
7
)
⋅
7
99
=
(
7
+
7
)
⋅
7
+
1
100
=
?