input:

6 734 1
1 2 3
1 7 1
8 7 1
9 7 9
10 7 10
11 7 1
12 7 12
13 7 1
14 7 14
15 7 15
16 7 16
17 7 1
18 7 18
19 7 1
20 7 20
21 7 1
22 7 22
23 7 1
24 7 24
25 7 25
26 7 1
27 7 27
28 7 1
29 7 29
30 7 1
31 7 31
32 7 1
33 7 33
34 7 1
35 7 35
36 7 36
37 7 37
38 7 1
39 7 39
40 7 40
41 7 41
42 7 1
43 7 43
44 7 44
4...

output:

Yes

result:

wrong answer expected NO, found YES [1st token]