Deep dives into algorithms, data structures, and competitive programming142 members
May 10, 2026
ST
saraht
Hey everyone! Has anyone attempted the new Algorithm Design challenge yet? The dynamic programming section is tricky.
9:04 AM
ST
I got stuck on the memoization part. Would love some hints without spoiling it!
9:05 AM
DR
devraj
Yeah I finished it last night. The trick is to think about subproblems differently โ bottom-up works much better here than top-down.
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9:12 AM
AM
Thanks devraj! I was going top-down and kept hitting stack overflows on the larger test cases ๐
9:18 AM
AM
Switched to bottom-up and it passed in ~120ms. Much better.
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9:19 AM
May 11, 2026
PK
priyak
Anyone else think the leaderboard system needs a weighting mechanism? Raw score doesn't reflect difficulty.
10:30 AM
ST
saraht
Totally agree! Solving a hard challenge should earn more tokens than an easy one. @devraj what do you think?
10:35 AM
DR
devraj
There's already a multiplier based on challenge tier (1x Easy, 2x Medium, 4x Hard). But I agree it could be more nuanced โ maybe factor in submission speed too.
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10:42 AM
AM
Speed multiplier would be cool. First 10 submissions get a bonus tier maybe?
10:55 AM
Today
PK
priyak
New machine learning challenge dropped! "Neural Net from Scratch" โ no frameworks allowed. Pure NumPy only ๐ฑ
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8:15 AM
DR
devraj
Oh this is right up my alley. Backpropagation by hand is actually a great exercise for understanding what PyTorch is doing under the hood.
8:22 AM
DR
Already at 73% accuracy on the validation set. Need to tune the learning rate scheduler.
8:50 AM
ST
saraht
devraj you're a machine ๐ I'm still on the forward pass implementation lol
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9:01 AM
AM
This room is exactly why I joined sweet-platform. Learning so much just from the conversation here ๐
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