__似水流年__的博客

Chiaki has an array ofnnpositive integers. You are told some facts about the array: for every two elementsaiaiandajajin the subarrayal..ral..r(l≤i<j≤rl≤i<j≤r),ai≠ajai≠ajholds. Chiaki ...

Recently, Bob has just learnt a naive sorting algorithm: merge sort. Now, Bob receives a task from Alice. Alice will give BobNNsorted sequences, and theii-th sequence includesaiaielements. Bob n...