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4
2
360
1
509949433

2
1 2
5
1 2
1 3
2 4
2 5
1
10
1 2
1 3
2 4
3 5
4 6
5 7
6 8
7 9
8 10

ok OK (4 test cases)

9
185396120
468170792
837583517
696626231
338497514
762842660
800028852
928391161
733524004

14
1 2
1 3
2 4
3 5
4 6
5 7
6 8
7 9
8 10
9 11
9 12
10 13
10 14
122
1 2
1 3
2 4
3 5
4 6
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9 11
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12 14
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19 30
20 31
20 32
20 33
21 34
21 35
21 36
22 37
22 38
22 39
22 40
22 41
22 42
23 43
...

ok OK (9 test cases)

10
338497514
733524004
447182954
415993605
453460670
50499055
648088551
986982752
907925397
315315230

124
1 2
1 3
2 4
3 5
4 6
5 7
6 8
7 9
8 10
9 11
10 12
11 13
12 14
13 15
14 16
15 17
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36 40
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37 42
38 43
38 44
38 45
38 46
39 47
39 48
39 49
39 50
40 51
40 52
40 53
40...

ok OK (10 test cases)

10
1
2
3
4
5
6
7
8
9
10

1
2
1 2
102
1 2
1 3
2 4
3 5
4 6
4 7
5 8
5 9
6 10
6 11
7 12
7 13
8 14
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11 40
11 41
11 42
11 43
11 44
11 45
11 46
11 47
11 48
11 49
11 50
11 51
11 52
12 53
12 5...

ok OK (10 test cases)

10
269199917
392009324
753889928
751355133
472639410
132096559
331333826
40414701
72847302
475706026

55
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
1 11
1 12
1 13
1 14
1 15
1 16
1 17
1 18
1 19
1 20
1 21
1 22
1 23
1 24
1 25
1 26
1 27
1 28
1 29
1 30
1 31
1 32
1 33
1 34
1 35
1 36
1 37
1 38
1 39
1 40
1 41
1 42
1 43
1 44
1 45
1 46
1 47
1 48
1 49
1 50
1 51
1 52
1 53
1 54
1 55
84
1 2
1 3
2 4
3 5
4 6
5 7
6 8
7 9
...

ok OK (10 test cases)