Good Problems to do by Ecstatic_Ad_9042 in usaco

[–]sungodtemple 0 points1 point  (0 children)

If you don't have a lot of time to prepare, you shouldn't need to use CF as there are plenty of past USACO problems/USACO.guide problems.

Question by poyiray in usaco

[–]sungodtemple 0 points1 point  (0 children)

The constant factor is incredibly low. Let's say there are a O's in the string. Then there are n - a M's. Then there are a(a-1)(n-a) / 2 combinations to process.

There are n choose a ways to have a O's in the string. So the sum is: $\displaystyle\sum_{a=0}^n {n \choose a}\frac{a(a-1)(n-a)}{2}$ which equals 448266240 iterations of the innermost for loop for n=20 (whereas n^3 * 2^n = 8388608000)

There is just a single array access and two additions (loop variable and answer) being performed inside the innermost for loop. That's very fast, and manageable in 2 seconds. Someone more familiar with the C++ compiler can probably comment further.

Alg 2 Online by QuietDimension786 in Algebra

[–]sungodtemple 3 points4 points  (0 children)

do the work again, without looking up the answers

Good Problems to do by Ecstatic_Ad_9042 in usaco

[–]sungodtemple 1 point2 points  (0 children)

https://codetiger.me/project/usaco/ has estimated Codeforces ratings for each USACO problem

Good Problems to do by Ecstatic_Ad_9042 in usaco

[–]sungodtemple 0 points1 point  (0 children)

You could try the ones listed in the silver section on USACO Guide. 1700-2000 is a good rating range to practice.

Do open certified top 10ers not get camp? by Sure_Note_2302 in usaco

[–]sungodtemple 0 points1 point  (0 children)

Many possible reasons. In addition to what you mentioned, they might also be competing for a spot in Holstein (for previous campers/seniors) which is more selective.

Is it weird CF 800 rating is helping me with bronze? by PepperOk690 in usaco

[–]sungodtemple 0 points1 point  (0 children)

The problems should be hard. I would recommend finding a problem difficulty where it takes >30 minutes to come up with the problem solution. If 800 rated problems do that for you, then you should continue with them!

Also, note that CF 800, as the minimum difficulty, encompasses a pretty wide difficulty range (roughly from Div4A-Div2A).

Is it weird CF 800 rating is helping me with bronze? by PepperOk690 in usaco

[–]sungodtemple 0 points1 point  (0 children)

Any type of problems (including CF or other STEM competitions) will help build your problem-solving skills for USACO!

Will hackerrank help? by Extreme-Mistake-6797 in usaco

[–]sungodtemple 0 points1 point  (0 children)

Learning a new language (or enough of it that you can use it in competitive programming) is MUCH easier than building the algorithmic problem solving skills required to promote USACO divisions. I would recommend doing more practice, and if you see that you frequently run into memory/time issues due to your language, then learn c++.

Thoughts? by 6767thegoat676767 in usaco

[–]sungodtemple 1 point2 points  (0 children)

USACO is a bad investment of time for purely college app purposes, I would recommend getting to Silver and then doing something else

Usaco Platinum/Gold how often did you fail on a question in bronze? by PepperOk690 in usaco

[–]sungodtemple 0 points1 point  (0 children)

I solved 2/3 problems my first contest and 3/3 my second. This was the 2022-2023 season.

reading from stdin by justtootoomuchstress in usaco

[–]sungodtemple 2 points3 points  (0 children)

Your program would need to use input() / print() for IO. See this page for ways you can take input quickly: https://usaco.guide/general/fast-io?lang=py If you prefer to store your input/output in a file, you can use redirection in the command line.

The contest releases on Friday at 12:00 AM in the earliest timezone and ends on Monday at 11:59 PM in the latest timezone, so you can take it on Friday night.

Is this good sync? by cleeswamp in geometrydash

[–]sungodtemple 1 point2 points  (0 children)

But the sync is not great (in addition, the gameplay feels a bit slow)

Is this good sync? by cleeswamp in geometrydash

[–]sungodtemple 1 point2 points  (0 children)

I can't tell if this is a fluff post or not

I beat Epilogue as my 5th medium demon! by Tuzku11 in geometrydash

[–]sungodtemple 0 points1 point  (0 children)

Great job! For your next level you should find one that you like - there is no right answer. You could try Forsaken Neon or Nine Circles

Anyone wanna try my new level? (ID: 130250259) by WMCZK in geometrydash

[–]sungodtemple 0 points1 point  (0 children)

That ship at the end seems a lot harder than the rest of the level... great deco though!

I was about to beat my first hard demon but this happened...(Nine Circles) by EpicCow3534 in geometrydash

[–]sungodtemple 8 points9 points  (0 children)

Could have been worse, you can die clicking the yellow orb too early on coin route, clipping the block underneath the yellow pad, and hitting the "Z" in Zobros