These are various programming contests that I've solved. When I can, I try to solve these in C, but if it requires something like a set, I'll go for C++ in most situations, since a proper set implementation takes a lot of code, and C++ has builtin versions.
Various datastructures: - [[http://codeforces.com/blog/entry/15729]]
This is the place I find task the most these days, and where I have most solved tasks. As of 2024-10-21 I have all tasks here, and there are 504 of them. I am working on a tool to plot average execution time compared to other solutions.
There are some tasks that have alternate solutions, which are cool or unusual in some way. These will
have a lXXX_YYY.cpp name, and to avoid counting them when checking, we use the following command:
tokei -e '*_*.cpp'
https://leetcode.com/u/teodor_spaeren/
https://open.kattis.com/users/rhermes
| Problem | Language | Status | CPU | Clues |
|---|---|---|---|---|
| Hello World! | C | Accepted | 0.00 | No |
| I've Been Everywhere, Man | C++ | Accepted | 0.00 | No |
| Pot | C | Accepted | 0.00 | No |
| Texture Analysis | C | Accepted | 0.02 | No |
| Sibice | C | Accepted | 0.00 | No |
| Skener | C | Accepted | 0.00 | No |
| Prsteni | C | Accepted | 0.00 | No |
| Zbrka | C | Accepted | 0.07 | Yes |
| Ispiti | C++ | Time Limit Exceeded | No |
http://codeforces.com/profile/rHermes
| Problem | Language | Status | Time | Memory |
|---|---|---|---|---|
| 13E - Holes | c | Accepted | 654ms | 3400 KB |
| Code | Name | Language | Points | Status | Time | Memory |
|---|---|---|---|---|---|---|
| tle16c6j1 | TLE '16 Contest 6 (Mock CCC) J1 - Paper Printing | C11 | 4/4 | 15/15 | 0.29 | 992.0 KB |
| ichb2017p2 | ICHB Selection Contest '17 Problem 2 - Black Star's Visit | C++20 | 7/7 | 100/100 | 0.165 | 16.69 MB |
| ichb2017p3 | ICHB Selection Contest '17 Problem 3 - Parallel Universe | C++20 | 12/12 | 100/100 | 1.02 | 4.2 MB |
| aplusb2 | A Plus B (Hard) | C++20 | 12/12 | 935/935 | 0.228 | 3.25 MB |
| tle17c4p3 | TLE '17 Contest 4 P3 - Fax's Christmas Dish | C++20 | 7/7 | 100/100 | 1.611 | 4.86 MB |
| tle17c3p6 | TLE '17 Contest 3 P6 - Donut Coupons | C++20 | 25/25 | 100/100 | 4.370 | 12.68 MB |
| nwerc11c | ICPC NWERC 2011 C - Movie Collection | C++20 | 10/10 | 2/2 | 0.076 | 4.39 MB |
| nwerc11a | ICPC NWERC 2011 A - Binomial Coefficients | C++20 | 10/10 | 2/2 | 0.009 | 3.06 MB |
| aac1p1 | An Animal Contest 1 P1 - Alpaca Shapes | C++20 | 3/3 | 100/100 | 0.068 | 1.54 MB |
| aac1p2 | An Animal Contest 1 P2 - Alpaca Racing | C++20 | 5/5 | 100/100 | 2.430 | 10.82 MB |
| mathp1 | A Math Contest P1 - Arrays | C++20 | 5/5 | 100/100 | 0.057 | 1.52 MB |
| mathp2 | A Math Contest P2 - Subsequence Sum | C++20 | 5/5 | 100/100 | 0.442 | 1.43 MB |
| mathp3 | A Math Contest P3 - LIS Reconstruction | C++20 | 7/7 | 100/100 | 0.660 | 15.64 MB |
| mathp5 | A Math Contest P5 - Good Arrays | C++20 | 7/7 | 100/100 | 0.660 | 15.64 MB |
- nwerc11a: Here I had to google to figure it out, but I learned a lot and I think my writeup is really nice.
- nwerc11c: This is the task where I learned about Fenwick trees, which was really cool.
- mathp1: This turns out to have a really cool solution with a GCD.
- mathp2: This has a really cool solution for subsquence sums.
- mathp5: AWESOME TASK! The solutions here are varied and I really learned a lot doing it!
- yac8p4: My first time encountering an interactive task! Really cool one.
- yac8p5: My first time seeing a "run twice task", and it has such an awesome solution!
http://acm.timus.ru/author.aspx?id=246961
| Number | Name | Language | Status | Time | Memory |
|---|---|---|---|---|---|
| 1000 | A+B Problem | c | Accepted | 0.001 | 204 KB |
| 1001 | Reverse Root | c | Accepted | 0.124 | 1248 KB |
| 1002 | Phone Numbers | c | Accepted | 0.031 | 752 KB |
| 1003 | Parity | cpp | Accepted | 0.062 | 952 KB |
| 1004 | Sightseeing Trip | c | Accepted | 0.031 | 288 KB |
| 1005 | Stone Pile | c | Accepted | 0.015 | 224 KB |
| 1006 | Square Frames | c | Accepted | 0.015 | 212 KB |
| 1007 | Code Words | c | Accepted | 0.265 | 212 KB |
| 1008 | Image Encoding | cpp | Accpeted | 0.015 | 284 KB |
| 1009 | K-based Numbers | c | Accepted | 0.001 | 212 KB |
| 1010 | Discrete Function | c | Accepted | 0.031 | 208 KB |
| 1011 | Conductors | c | Accepted | 0.015 | 204 KB |
| 1012 | K-based Numbers. Version 2 | c | Accepted | 0.015 | 208 KB |
| 1013 | K-based Numbers. Version 3 | c | Accepted | 0.015 | 232 KB |
| 1014 | Product of Digits | c | Accepted | 0.015 | 208 KB |
| 1015 | Test the Difference! | c | Accepted | 0.015 | 344 KB |
| 1016 | Cube on the Walk | cpp | Accepted | 0.001 | 448 KB |
| 1017 | Staircases | c | Accepted | 0.001 | 336 KB |
| 1018 | Binary Apple Tree | c | Accepted | 0.001 | 304 KB |
| 1019 | Line Painting | c | Accepted | 0.062 | 520 KB |
| 1020 | Rope | c | Accepted | 0.001 | 244 KB |
| 1021 | Sacrament of the Sum | c | Accepted | 0.031 | 260 KB |
| 1022 | Genealogical Tree | cpp | Accepted | 0.001 | 300 KB |
| 1023 | Buttons | c | Accepted | 0.015 | 204 KB |
| 1024 | Permutations | c | Accepted | 0.001 | 208 KB |
| 1025 | Democracy in Danger | c | Accepted | 0.001 | 208 KB |
| 1026 | Questions and Answers | c | Accepted | 0.031 | 228 KB |
| 1027 | D++ Again | c | Accepted | 0.001 | 176 KB |
| 1028 | Stars | c | Accepted | 0.015 | 376 KB |
| 1029 | Ministry | c | Accepted | 0.015 | 652 KB |
| 1030 | Titanic | c | Accepted | 0.001 | 240 KB |
| 1031 | Railway Tickets | c | Accepted | 0.280 | 896 KB |
| 1031 | Railway Tickets | cpp | Accepted | 0.015 | 628 KB |
| 1032 | Find A Multiple | c | Accepted | 0.015 | 312 KB |
| 1033 | Labyrinth | c | Accepted | 0.001 | 220 KB |
| 1034 | Queens in Peaceful Positions | c | Accepted | 0.001 | 192 KB |
| 1036 | Lucky Tickets | c | Accepted | 0.046 | 236 KB |
| 1037 | Memory Management | c | Accepted | 0.795 | 328 KB |
| 1038 | Spell Checker | c | Accepted | 0.015 | 328 KB |
| 1039 | Anniversary Party | c | Accepted | 0.001 | 516 KB |
| 1040 | Airline Company | c | Accepted | 0.001 | 236 KB |
| 1041 | Nikifor | cpp | Accepted | 0.125 | 1380 KB |
| 1042 | Central Heating | c | Accepted | 0.015 | 272 KB |
| 1067 | Disk Tree | cpp | Accepted | 0.093 | 1756 KB |
| 1068 | Sum | c | Accepted | 0.001 | 212 KB |
| 1074 | Very Short Problem | c | Accepted | 0.015 | 200 KB |
| 1100 | Final Standings | c | Accepted | 0.078 | 2560 KB |
| 1110 | Power | c | Accepted | 0.001 | 204 KB |
| 1185 | Wall | c | Accepted | 0.001 | 260 KB |
| 1820 | Ural Steaks | c | Accepted | 0.015 | 208 KB |
| 1877 | Bicycle Codes | c | Accepted | 0.001 | 192 KB |
- 1003 - Parity
- First time I have heard of or used a DSU. Slick way of solving the problem.
- 1005 - Stone Pile
- I read a reasearch paper on two-way partitioning to solve it.
- 1015 - Test The Difference!
- I really like how I do the rotation of the dice here and how I kind of hand unrolled the loop.
- 1016 - Cube on the Walk
- Nice implementation of A*
- 1019 - Line painting
- I implemented the damn datastructure myself, and I'm proud of it.
- 1028 - Stars
- First time I heard of Binary Index Tree. Cool datastructure.
- 1032 - Find a Multiple
- It has a nice mathematical proof behind it.
- 1034 - Queens in Peaceful Positions
- I rank high on this one, and it is a problem that seems impossible when starting, but turns out to be very possible.
- 1074 - Very Short problem
- I like that I managed to implement it in C, and using so little memory.
- 1100 - Final Standings
- First time I heard of counting sort.
- 1185 - Wall
- First time I encountered convex hull algorithms.
- 1401 - Nikifor
- It's fun when linear algebra AND modular arithmetic comes into play.
- 1042 - Central Heating
- I like it when linear algebra comes into places you would not expect it!
- Make sure to understand everything about timus 1004
- Refine p1074, to use less structures.
- Redo Timus p1006 to not use stretch buffers.
- Redo Timus p1037 to be faster. This may involve queues?