chuka231's blog

By chuka231, history, 4 months ago, In English

I was playing with the CodeForces API and had a chance to cumulate the tag stats for various diff problems. Hope it helps you to prioritize the practice problem choice.

########### Diff: 1600

1 implementation: 109

2 greedy: 96

3 math: 84

4 brute-force: 51

5 constructive-algorithms: 50

########### Diff: 1700

1 implementation: 97

2 math: 91

3 greedy: 88

4 constructive-algorithms: 57

5 dp: 54

########### Diff: 1800

1 greedy: 96

2 implementation: 77

3 math: 67

4 dp: 63

5 constructive-algorithms: 51

########### Diff: 1900

1 dp: 91

2 greedy: 89

3 data-structures: 64

4 math: 60

5 implementation: 56

########### Diff: 2000

1 dp: 98

2 greedy: 86

3 math: 62

4 data-structures: 55

5 implementation: 52

########### Diff: 2100-2400

1 dp: 342

2 data-structures: 272

3 math: 229

4 greedy: 208

5 graphs: 196

########### Diff: 2500-2900

1 dp: 260

2 data-structures: 200

3 math: 166

4 graphs: 132

5 trees: 114

########### Diff: 3000-4000

1 data-structures: 119

2 dp: 101

3 math: 88

4 trees: 62

5 graphs: 61

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By chuka231, history, 12 months ago, In English

I made a virtual copy contest of "Educational DP Contest" that was held a while ago at atcoder but the problems are very selective and provide very good opportunity of DP practice. It has 26 problems and you have 26 days to complete it.

Contest URL: (you need an atcoder account for submission) https://not-522.appspot.com/contest/5727615723765760

Feel free to join us.

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By chuka231, history, 23 months ago, In English

topcoder has 2-3 rounds in a month, atcoder holds once in a week, but CF has many rounds in a week. Just in my opinion, CF should limit the round numbers to control the contents levels and quality.

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By chuka231, history, 4 years ago, In English

Hello,

Yesterday during CFR #429, I something magical thing happened to me.

Just before the end of contest, somehow my problem D was submitted and accepted!!!!

I already gave up the problem D and E due to the hardness (as usually), and I was trying to fix my hacked problem B. I think someone's submission was counted to mine, but at the end system judged that I cheated and copied :(

Is there someone else who have seen this issue?

I hope the admin will fix it, and rejudge my submission.

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By chuka231, 5 years ago, In English

Please share us your practice or lesson methods! Personally, I take part in online rounds, but still need to impove something. Thanks in advance!

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By chuka231, history, 5 years ago, In English
 
 
 
 
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By chuka231, history, 5 years ago, In English

Please share us your practice or lesson methods! Personally, I take part in online rounds, but still need to impove something. Thanks in advance!

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