Try this test:

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

The answer is "YES" (we can block the 4th planet). But my AC program outputs "NO". I think this test case should be added.

My Ac prog gives YES
Let juri make redjudjement