I need help with this problem
Difference between en1 and en2, changed 0 character(s)
Hello Codeforces!! ↵
↵
I saw this problem days ago and I have tried to solve it since then but I have not been successful. Help me please↵
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This is the [problem](https://matcomgrader.com/problem/9779/ghost-in-the-securitree/)↵

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  Rev. Lang. By When Δ Comment
en2 English Kanata18 2024-10-12 06:57:49 0 (published)
en1 English Kanata18 2024-10-12 06:55:57 257 Initial revision (saved to drafts)