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https://leetcode.com/problems/delete-columns-to-make-sorted-iii/description/?envType=daily-question&envId=2025-12-22LeetCode - Delete Columns to Make Sorted III문제 유형: 다이나믹 프로그래밍, 문자열 처리문제 난이도: Hard 문제You are given an array of n strings strs, all of the same length.We may choose any deletion indices, and we delete all the characters in those indices for each string.For example, if we have strs = ..

https://leetcode.com/problems/find-all-people-with-secret/description/?envType=daily-question&envId=2025-12-19LeetCode - 2092. Find All People With Secret문제 유형: 유니온-파인드문제 난이도: Hard 문제You are given an integer n indicating there are n people numbered from 0 to n - 1. You are also given a 0-indexed 2D integer array meetings where meetings[i] = [xi, yi, timei] indicates that person xi and person yi ..

https://leetcode.com/problems/maximum-profit-from-trading-stocks-with-discounts/description/?envType=daily-question&envId=2025-12-16LeetCode - Maximum Profit from Trading Stocks with Discounts문제 유형: 다이나믹 프로그래밍, 트리, 그래프문제 난이도: Hard 문제You are given an integer n, representing the number of employees in a company. Each employee is assigned a unique ID from 1 to n, and employee 1 is the CEO. You are ..

https://leetcode.com/problems/count-the-number-of-computer-unlocking-permutations/description/?envType=daily-questionLeetCode - Count the Number of Computer Unlocking Permutations문제 유형: 수학, 조합론, 애드 혹문제 난이도: Medium 문제You are given an array complexity of length n.There are n locked computers in a room with labels from 0 to n - 1, each with its own unique password. The password of the computer i ha..

https://leetcode.com/problems/count-partitions-with-max-min-difference-at-most-k/description/?envType=daily-question&envId=2025-12-06LeetCode - Count Partitions With Max-Min Difference at Most K문제 유형: 모노토닉 큐, 다이나믹 프로그래밍, 슬라이딩 윈도우문제 난이도: Medium 문제You are given an integer array nums and an integer k. Your task is to partition nums into one or more non-empty contiguous segments such that in each se..

https://leetcode.com/problems/count-number-of-trapezoids-ii/editorial/?envType=daily-question&envId=2025-12-03LeetCode - Count Number of Trapezoids II문제 유형: 기하학, 해시문제 난이도: Hard 문제You are given a 2D integer array points where points[i] = [xi, yi] represents the coordinates of the ith point on the Cartesian plane.Return the number of unique trapezoids that can be formed by choosing any four distin..

https://leetcode.com/problems/count-number-of-trapezoids-i/description/?envType=daily-question&envId=2025-12-02LeetCode - Count Number of Trapezoids I문제 유형: 기하학문제 난이도: Medium 문제You are given a 2D integer array points, where points[i] = [xi, yi] represents the coordinates of the ith point on the Cartesian plane.A horizontal trapezoid is a convex quadrilateral with at least one pair of horizontal ..

https://leetcode.com/problems/maximum-running-time-of-n-computers/description/?envType=daily-question&envId=2025-12-01Leetcode - Maximum Runnging Time of N Computers문제 유형: 이진탐색, 매개 변수 탐색, 그리디문제 난이도: Hard 문제You have n computers. You are given the integer n and a 0-indexed integer array batteries where the ith battery can run a computer for batteries[i] minutes. You are interested in running all n..

https://leetcode.com/problems/set-intersection-size-at-least-two/description/?envType=daily-question&envId=2025-11-20LeetCode - Set Intersection Size At Least Two문제 유형: 그리디, 투 포인터문제 난이도: Hard 문제You are given a 2D integer array intervals where intervals[i] = [starti, endi] represents all the integers from starti to endi inclusively.A containing set is an array nums where each interval from interv..

https://leetcode.com/problems/minimum-operations-to-convert-all-elements-to-zero/description/?envType=daily-question&envId=2025-11-10LeetCode - Minimum Operations to Convert All Elements to Zero문제 유형: 모노토닉 스택(단조 증가 스택)문제 난이도: Medium 문제You are given an array nums of size n, consisting of non-negative integers. Your task is to apply some (possibly zero) operations on the array so that all elements..