[BOJ] 6086 최대 유량Read more
[Kick Start 2022 Round B] Hamiltonian TourRead more
[Kick Start 2022 Round B] Unlock the PadlockRead more
[LeetCode] Number of Flowers in Full Bloom

2251. Number of Flowers in Full Bloom

You are given a 0-indexed 2D integer array flowers, where flowers[i] = [starti, endi] means the ith flower will be in full bloom from starti to endi (inclusive). You are also given a 0-indexed integer array persons of size n, where persons[i] is the time that the ith person will arrive to see the flowers.

Return an integer array answer of size n, where answer[i] is the number of flowers that are in full bloom when the ith person arrives.

Read more
[LeetCode] Count Number of Rectangles Containing Each Point

2250. Count Number of Rectangles Containing Each Point

You are given a 2D integer array rectangles where rectangles[i] = [li, hi] indicates that ith rectangle has a length of li and a height of hi. You are also given a 2D integer array points where points[j] = [xj, yj] is a point with coordinates (xj, yj).

The ith rectangle has its bottom-left corner point at the coordinates (0, 0) and its top-right corner point at (li, hi).

Return an integer array count of length points.length where count[j] is the number of rectangles that contain the jth point.

The ith rectangle contains the jth point if 0 <= xj <= li and 0 <= yj <= hi. Note that points that lie on the edges of a rectangle are also considered to be contained by that rectangle.

Read more
[LeetCode] Count Lattice Points Inside a Circle

2249. Count Lattice Points Inside a Circle

Given a 2D integer array circles where circles[i] = [xi, yi, ri] represents the center (xi, yi) and radius ri of the ith circle drawn on a grid, return the number of lattice points that are present inside at least one circle.

Note:

  • A lattice point is a point with integer coordinates.
  • Points that lie on the circumference of a circle are also considered to be inside it.
Read more
[LeetCode] Intersection of Multiple Arrays

2248. Intersection of Multiple Arrays

Given a 2D integer array nums where nums[i] is a non-empty array of distinct positive integers, return the list of integers that are present in each array of nums sorted in ascending order.

Read more
[Kick Start 2022 Round B] Palindromic FactorsRead more
[Kick Start 2022 Round B] Infinity AreaRead more
[LeetCode] Count Pairs Of Nodes

1782. Count Pairs Of Nodes

You are given an undirected graph defined by an integer n, the number of nodes, and a 2D integer array edges, the edges in the graph, where edges[i] = [ui, vi] indicates that there is an undirected edge between ui and vi. You are also given an integer array queries.

Let incident(a, b) be defined as the number of edges that are connected to either node a or b.

The answer to the jth query is the number of pairs of nodes (a, b) that satisfy both of the following conditions:

  • a < b
  • incident(a, b) > queries[j]

Return an array answers such that answers.length == queries.length and answers[j] is the answer of the jth query.

Note that there can be multiple edges between the same two nodes.

Read more