문제 설명Given a 0-indexed integer array nums of size n and two integers lower and upper, return the number of fair pairs.A pair (i, j) is fair if:0 , andlower  문제 예제Example 1:Input: nums = [0,1,7,4,4,5], lower = 3, upper = 6Output: 6Explanation: There are 6 fair pairs: (0,3), (0,4), (0,5), (1,3), (1,4), and (1,5). Example 2:Input: nums = [1,7,9,2,5], lower = 11, upper = 11Output: 1Explanation: Ther..

문제 설명You are given a 2D integer array items where items[i] = [$price_i$, $beauty_i$] denotes the price and beauty of an item respectively. You are also given a 0-indexed integer array queries. For each queries[j], you want to determine the maximum beauty of an item whose price is less than or equal to queries[j]. If no such item exists, then the answer to this query is 0. Return an array answer ..

문제 설명You are given a 0-indexed integer array nums of length n.You can perform the following operation as many times as you want:Pick an index i that you haven’t picked before, and pick a prime p strictly less than nums[i], then subtract p from nums[i].Return true if you can make nums a strictly increasing array using the above operation and false otherwise.A strictly increasing array is an array..