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

ok OK (4 test cases)

9
185396120
468170792
837583517
696626231
338497514
762842660
800028852
928391161
733524004

14
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
1 11
9 12
10 13
10 14
122
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
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22 23
23 24
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1 27
14 28
15 29
16 30
17 31
17 32
18 33
18 34
19 35
19 36
20 37
20 38
21 39
21 40
22 41
22 42
22 43
...

ok OK (9 test cases)

10
338497514
733524004
447182954
415993605
453460670
50499055
648088551
986982752
907925397
315315230

124
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
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38 39
39 40
40 41
41 42
42 43
43 44
44 45
45 46
46 47
47 48
48 49
1 50
35 51
36 52
37 53
38...

ok OK (10 test cases)

10
1
2
3
4
5
6
7
8
9
10

1
2
1 2
102
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
1 16
4 17
5 18
6 19
7 20
8 21
9 22
9 23
9 24
9 25
9 26
10 27
10 28
10 29
10 30
10 31
10 32
10 33
11 34
11 35
11 36
11 37
11 38
11 39
11 40
11 41
12 42
12 43
12 44
12 45
12 46
12 47
12 48
12 49
12 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
2 3
3 4
4 5
5 6
6 7
7 8
8 9
...

ok OK (10 test cases)