CKChaewoon kanginriveroverflow.hashnode.dev·Apr 5, 2025 · 6 min readEducational Codeforces Round177(Div. 2) Reivew(A~D)https://codeforces.com/contest/2086/problems I solved A, C in Contest, and Upsolved B, D with editorial.I spent too much time on B, stupidly. A - Cloudberry Jam (math, greedy) It could be solved instantly with intuition, but I didn't.Because I was n...00
CKChaewoon kanginriveroverflow.hashnode.dev·Mar 30, 2025 · 5 min read[Codeforces] Round 1014(Div.2) Review(A~D)https://codeforces.com/contest/2092 I solved only one problem(A)…, and upsolved 3 problems(B, C, D). Even though I got the great intuition for B, C, I couldn’t solve it. A - Kamilka and the Sheep (greedy, math, number theory, sorting) I solved in 15 ...00
CKChaewoon kanginriveroverflow.hashnode.dev·Mar 27, 2025 · 7 min read[Codeforces] Round 1013(Div.3) Review(A~E)https://codeforces.com/contest/2091 I solved 4 problems(A, B, C, D), and upsolved 1 problems(E). A - Olympiad Date (greedy, implementation) I was spend 10 minutes! because of a simple mistake. Setting up frequencies wrong make me struggle.. even if i...00
CKChaewoon kanginriveroverflow.hashnode.dev·Mar 25, 2025 · 3 min read[LeetCode] 3394. Check if Grid can be Cut into SectionsProblem https://leetcode.com/problems/check-if-grid-can-be-cut-into-sections/description/ Leetcode - Check if Grid can be Cut into Sections Type - Sorting, Line sweeping, Greedy Difficulty - Medium Approach & Solution The goal is to determine whether...00
CKChaewoon kanginriveroverflow.hashnode.dev·Mar 24, 2025 · 3 min read[LeetCode] 3169. Count Days Without MeetingsProblem https://leetcode.com/problems/count-days-without-meetings/description Leetcode - Count Days Without Meetings Type - Heap, Sorting, Greedy Difficulty - Medium Approach & Solution Processing sorted meetings makes the problem easier. We will use...00