题目题面Cards Sorting Vasily has a deck of cards consisting of n cards.There is an integer on each of the cards, this intege

题目题面You are given an array a1,a2,…,an and two integers m and k. You can choose some subarray al,al+1,…,ar−1,ar. The cost

题目题面Alice and Bob love playing one-dimensional battle ships. They play on the field in the form of a line consisting of