Help needed in CSES-Coin Collector!

Revision en4, by EternalThread, 2021-09-25 19:04:57

Anyone who has knowledge of condensation graphs or strongly connected components can help.
Problem Link:- Coin Collector

I have two codes one was not accepted and one was accepted just by adding a reverse(all(root_nodes)(which basically reverses the vector) in line number 80 and the code was accepted. Can anyone please tell me the reason for this??

WA Code
Accepted Code

Thanks in advance!!

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en4 English EternalThread 2021-09-25 19:04:57 12 Tiny change: 'he reason behind this.\n\n[WA Co' -> 'he reason for this??\n\n[WA Co'
en3 English EternalThread 2021-09-25 18:14:26 4082
en2 English EternalThread 2021-09-25 18:03:10 0 (published)
en1 English EternalThread 2021-09-25 18:02:41 4598 Initial revision (saved to drafts)