Editorial for Thao tác
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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.
Author:
Ta đơn giản cần tìm số nguyên có dạng
.
Giá trị lớn nhất có thể của là
.
Độ phức tạp:
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