YoungForest's blog

RankNameScoreFinish TimeQ1 (4)Q2 (5)Q3 (6)Q4 (8)313 / 4046YoungForest161:03:210:21:32 (1)0:36:080:53:21 (1)nullThis contest was moderately difficult. Because of an issue with the judging program, many people were trapped by the third problem. The test case was corrected after the contest. This is al

RankNameScoreFinish TimeQ1 (4)Q2 (5)Q3 (6)Q4 (8)241 / 983YoungForest70:18:230:09:560:18:23nullnullLeetCode opened its first biweekly contest, every Saturday night from 10:30 to 12:30. The goal may be to make it easier for students in Europe to participate. The normal weekly contest is usually in the

RankNameScoreFinish TimeQ1 (4)Q2 (5)Q3 (6)Q4 (8)855 / 3985YoungForest101:03:500:53:001:03:50solved after the contestnullWhen I got up on Sunday, it was already past 11, so I joined the contest 40 minutes late. I solved the first two problems smoothly. I took some detours on the third problem and onl

Although the problem quality this week was quite good, the difficulty was not high. It was a contest about speed. Because the second problem had a relatively long statement, my problem-solving order was 1->3->4->2. RankNameScoreFinish TimeQ1 (4)Q2 (5)Q3 (6)Q4 (8)247 / 4143YoungForest200:57:430:11:1

This week’s problems were harder than usual. You could also say they happened to hit my blind spot: DP problems. To be honest, I have not studied DP problems deeply. This contest had especially many DP problems, especially the fourth problem, which can be solved with the classic knapsack problem. R

RankNameScoreFinish TimeQ1 (4)Q2 (5)Q3 (6)Q4 (8)220 / 4109YoungForest150:59:430:17:070:29:360:54:43 (1)nullThe quality of recent contests has been decent. Even the simplest warm-up problem requires careful thought. There is also a DP problem every time. DP is the type of thing where even after doing

My book review

RankNameScoreFinish TimeQ1 (4)Q2 (5)Q3 (5)Q4 (5)70 / 3635YoungForest151:34:070:07:280:16:45null1:29:07 (1)This Sunday was a workday in China, so the number of people participating in LeetCode weekly contest directly dropped by 1,000, which shows how enthusiastic domestic participants are about this

RankNameScoreFinish TimeQ1 (4)Q2 (5)Q3 (5)Q4 (5)220 / 4136YoungForest171:45:100:14:52 (1)0:33:50(1)null1:25:10 (2)The quality of this contest continued to improve on top of last week. The corner cases in particular caused me to have 4 incorrect attempts, which means 20 minutes of penalty. But from t

RankNameScoreFinish TimeQ1 (4)Q2 (5)Q3 (5)Q4 (5)864 / 4860YoungForest141:10:350:42:320:54:381:10:35nullThis week’s problems improved quite a lot in quality compared with the previous few weeks. There were fewer trivial problems, and more algorithmic knowledge was tested. Even the first two Easy prob