input:

100000
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101...

output:

1 1
-1
3 3
-1
3 1
-1
5 5
-1
5 5
-1
7 3
-1
7 1
-1
9 9
-1
9 9
-1
11 11
-1
11 9
-1
13 5
-1
13 5
-1
15 3
-1
15 1
-1
17 17
-1
17 17
-1
19 19
-1
19 17
-1
21 21
-1
21 21
-1
23 19
-1
23 17
-1
25 9
-1
25 9
-1
27 11
-1
27 9
-1
29 5
-1
29 5
-1
31 3
-1
31 1
-1
33 33
-1
33 33
-1
35 35
-1
35 33
-1
37 37
-1
37 37
...

result:

wrong answer sides not equal