Комментарии
На hpfdf → [PROB] 0/1 matrix, 14 месяцев назад
0
Thank you. @_@
На hpfdf → Some interesting problems, 19 месяцев назад
0
Thx for your idea.

N non-negative integers are given in binary code.

We can use a prefix tree (Trie) to solve case 3.  (USACO Training 6.1.3 Cow XOR)
O(NlogM)

In case 4 we can sort the integers, and the max NOR value must be from two adjacent integers.
O(Nlog2M) using quick sort..
На hpfdf → Some interesting problems, 19 месяцев назад
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No..  Just some problems..
На qinpengfei → number 1, 2 года назад
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呵呵 哈哈 嘎嘎 嘿嘿 嘻嘻 are all 'Ha Ha'.