Need help in this repeated subproblem

Revision en5, by The-2024ECPCwinner, 2023-12-18 10:10:49
  • I met this problem as a subproblem many times and tried to find a solution for it but failed ,So I make an elegent statement for the problem asking for someone's help :

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  Rev. Lang. By When Δ Comment
en6 English The-2024ECPCwinner 2023-12-18 10:11:32 83
en5 English The-2024ECPCwinner 2023-12-18 10:10:49 182
en4 English The-2024ECPCwinner 2023-12-18 09:51:54 119
en3 English The-2024ECPCwinner 2023-12-18 09:49:27 234
en2 English The-2024ECPCwinner 2023-12-18 09:48:05 93
en1 English The-2024ECPCwinner 2023-12-18 09:44:18 404 Initial revision (published)