Editorial for VOI 21 Bài 4 - Phần thưởng
Remember to use this editorial only when stuck, and not to copy-paste code from it. Please be respectful to the problem author and editorialist.
Submitting an official solution before solving the problem yourself is a bannable offence.
Submitting an official solution before solving the problem yourself is a bannable offence.
Stream kèm slide chữa đề VOI 2021 https://www.facebook.com/groups/VNOIForum/permalink/3839076132779859/
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