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4
2
360
1
509949433

2
1 2
5
1 2
1 3
1 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
1 4
2 5
2 6
3 7
4 8
5 9
6 10
7 11
8 12
9 13
10 14
122
1 2
1 3
1 4
1 5
1 6
1 7
2 8
2 9
2 10
2 11
3 12
3 13
3 14
3 15
4 16
4 17
4 18
5 19
5 20
5 21
6 22
6 23
6 24
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8 27
8 28
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9 30
10 31
11 32
12 33
13 34
14 35
15 36
15 37
15 38
15 39
15 40
15 41
15 42
16 43
16 44
16 45
16 46
16...

ok OK (9 test cases)

10
338497514
733524004
447182954
415993605
453460670
50499055
648088551
986982752
907925397
315315230

124
1 2
1 3
1 4
1 5
1 6
1 7
2 8
2 9
2 10
3 11
3 12
4 13
5 14
6 15
7 16
8 17
9 18
10 19
11 20
12 21
13 22
14 23
14 24
14 25
14 26
14 27
14 28
15 29
15 30
15 31
15 32
15 33
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15 35
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16 40
16 41
16 42
17 43
17 44
17 45
17 46
17 47
17 48
17 49
18 50
18 51
18 52
18 53
18 54
18 ...

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

ok OK (10 test cases)