제출 #41655

2
2 1
1 2
6 1
1 2

YESNO

YES
YES

2
3 2
2 1
2 3
5 2
1 2
3 1

NONO

YES
YES

2
9 4
3 5
5 2
5 4
1 5
2 1
1 2

NONO

YES
YES

2
3 1
1 2
3 1
1 2

런타임 에러 (RTE)
stderr:
 Traceback (most recent call last):
  File "Main.py", line 45, in <module>
    if N - len(check) - len(check2) != 0:
NameError: name 'check2' is not defined. Did you mean: 'check'?

YES
YES