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Quick facts

• Difficulty: HARD
• Problem: Candy
• Main tags: Array, Greedy

What the problem is really asking

There are children standing in a line. Each child has a rating, and the goal is to give out the fewest total candies while obeying two rules:

• every child gets at least one candy
• any child with a higher rating than an adjacent child must get more candies than that neighbor

The important detail is that the comparison is only between neighbors. A child does not need more candy than every lower-rated child, only more than the children immediately to the left and right when their rating is higher.

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Quick facts

• Difficulty: HARD
• Problem: Longest Increasing Path in a Matrix
• Main tags: Array, Dynamic Programming, Depth-First Search, Graph Theory, Topological Sort, Memoization, Matrix

What the problem is really asking

The input is a grid of numbers. From any cell, a path may move only up, down, left, or right, and each move must go to a strictly larger value. The task is to return the maximum number of cells that can appear in any such path.

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Difficulty: MEDIUM
Problem: Palindrome Partitioning

Problem gist

The input is a string s. The task is to return every possible way to split s into non-empty substrings such that every chosen substring is a palindrome.

For example, "aab" can be split as ["a", "a", "b"] or ["aa", "b"]. Both are valid because every piece reads the same forward and backward. A split like ["a", "ab"] is invalid because "ab" is not a palindrome.

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Quick facts

• Difficulty: MEDIUM
• Problem: Exclusive Time of Functions
• Main tags: Array, Stack

What the problem is really asking

The input describes calls on a single-threaded CPU. Each log entry has a function id, an event type, and a timestamp:

function_id:start_or_end:timestamp

A function can call another function before it finishes. While the child function runs, the parent is paused. The goal is to return, for every function id, how much time that function spent actually executing, excluding time spent inside child calls.

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What happened

NVIDIA’s official technical blog published Streaming Tokens and Tools: Multi-Turn Agentic Harness Support in NVIDIA Dynamo, a post about making an inference server behave like a first-class backend for modern coding and agent harnesses rather than a plain text-completion endpoint.

The core point is that agentic inference has a richer contract than ordinary chat. A model turn may contain reasoning, tool calls, tool results, more reasoning, and more tool calls, all of which have to be preserved in the structure expected by the client. If the server streams tokens but reconstructs tool calls incorrectly, drops the reasoning that justified a tool call, or loses request metadata during an internal conversion, the model can receive a subtly different conversation on the next turn. The failure mode is not a visible HTTP error. It is a degraded agent that forgets why it called a tool, waits too long to execute tools, or runs with a different harness policy than intended.

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A planet caught in a destructive loop

The article describes a star-planet relationship that is far more active than the usual picture of a star punishing a nearby planet with heat, radiation and gravity. HIP 67522 b, a young Jupiter-size world about 408 light-years away, appears to be doing something back to its star. As it races around HIP 67522, the planet seems to trigger enormous stellar flares. Those flares then blast the planet’s atmosphere, slowly stripping away the very world that sets them off.

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What happened

Techmeme surfaced this May 9, 2026 item in its Techmeme cluster, and the original piece is Sam Rubin’s May 7, 2026 Palo Alto Networks post, A New Era of Security: Frontier AI Defense.

Palo Alto Networks argues that frontier AI has crossed a practical threshold for cybersecurity. The post is partly a product announcement for Frontier AI Defense, but the interesting part is the operational claim underneath it: the latest models are no longer just faster helpers for writing code or triaging findings. In Palo Alto’s testing, they behave more like autonomous security operators that can find vulnerabilities, connect them into exploit paths, and compress attack timelines.

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This summary covers The Economist’s April 25th, 2026 Business article listed in the contents as Bezos v Musk and published under the headline Star wars.

The article argues that Jeff Bezos’s space ambitions are no longer just a side project attached to his fortune. Blue Origin and Amazon are becoming parts of the same strategic contest with Elon Musk’s SpaceX: reusable rockets, satellite internet, lunar transport and the infrastructure of the commercial space economy. The problem is that SpaceX already has the thing every rival wants, a tightly integrated machine that builds satellites, launches them and sells the resulting service at scale.

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US will start revoking passports for thousands of parents who owe child support (r/news)

• DaStompa: Elon musk is going to lose his passport?
• coffeemakedrinksleep: This is already the law in the US. I personally know a couple of people who lost their drivers license and/or passport over not paying child support.
• Some_Number_8516: Be wary of anyone that seeks to take people’s identification papers

Christian missionary hailed as ‘holiest man alive’ pleads guilty to abusing boys in Texas (r/news)

• OuijaWalker: Still not a drag queen
• YouMustBeJoking888: The dyed black bowl cut had to have been a clue.
• Honeycove91: It’s always the ones that you most suspect…

US military strikes Iran’s Qeshm port and Bandar Abbas (r/worldnews)

• Disc0Disc0Disc0: This is the ultimate sign they are close to a deal
• GlassjawIsGreat: This doesn’t seem very ceasefiery after reading it a few times…
• ferchristssakestopit: …..good thing this war is over and we are following peace.

Massive anti-pedophile operation in Poland, 123 detained (r/worldnews)

• Gelomaniac: Now do one in the white house
• Dry_Departure_7813: But the DOW is over 50k how are the police able to arrest pedofiles?
• GaddockTeegFunPolice: ‘Kurwa why is sundays church service cancelled?’

What’s a ‘silent luxury’ that rich people have that most normal people would never even notice? (r/AskReddit)

• Neatilia: The ability to make one mistake without it ruining your life
• ThisMomentOn: Quiet. Rich people live in places that are quiet (even if they are in the middle of a city, they are away from busy roads, have significant landscaping to dampen noise, etc.), have quiet appliances, sound proofing in their homes, exceptionally quiet cars. The only noises they hear are the ones that they want.
• newg1954: The gift of preventative maintenance

TIL hikers in the Alps discovered Otzi in 1991, a 5,300-year-old man naturally preserved in ice. Scientists identified his last meal as ibex meat and grains, found over 60 soot tattoos around his joints and spine, and recovered his copper axe, flint knife, a fire-starting kit and grass cloak. (r/todayilearned)

• Fantastic_Key_8906: The guy dropped some loot
• pinkpugita: I find it fascinating that Otzi’s attacker never looted his axe and items, implying it was an act if murder. Otzi has defensive wounds but ultimately died from an arrow shot from the back. Scientists say he would have died in minutes from bleeding, so he didn’t run far off from his attacker.
• uCannoTUnseEThiS: Imagine walking around and you just find a 5300 year old dude chilling in the ice. And the fact he had tattoos around his joints… makes you wonder if it was some kind of pain relief thing like ancient acupuncture or something

Spirit Airlines passenger with dementia found dead after staff ‘abandoned’ him at airport, lawsuit says (r/nottheonion)

• bhague3: This happened in Houston in 2024 for those wondering, the lawsuit was just filed
• JugglingRick: Why is someone with dementia flying alone?
• lala4now: The relatives should have flown to Honduras to accompany him. An airline can’t be expected to care for a person with dementia IMHO. My husband has done this for an elderly relative (not traveling from Honduras but cross country). Yes there’s time and expense involved, but it’s what you do when a relative needs one on one help to get to their destination safely.

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Is Alex wang from Scale AI legit (Blind)

• sfvq47 (Amazon): i mean he was MOP and on us physics team so he is fs genius
• hugMePls (Microsoft): He was the tech lead of quora at 16, someone also mentioned an international Olympiad as well. Joma tech actually has a video where he talks about being interviewed by him at 19. Dude’s cracked, unbelievably so.
• vristotle (Microsoft): Being good at high school math competitions isn’t the same as being a good leader. There are many posts on here talking about how inexperienced he is with real AI work and how inept of a leader he is. Not surprised, he seems very immature and grew up with a silver spoon

Amazon INTENSIONALLY leaks layoffs (Blind)

• nthin2lose (SentinelOne): Amazon knows how to keep everything toxic.
• Jefry (Salesforce): They also stack rank by spelling performance.
• liberat3d (ZenBusiness PBC): It’ll be ironic if they cut someone tomorrow who fixes their outage issues today.

Mass Layoffs Have Consequences (Blind)

• RowdySWE (Block): Elon basically gave CEOs permission to start doing this when he ripped apart twitter and it was still functioning.
• crazzak (Microsoft): Employees don’t feel invested in companies that throw them away like trash the second it saves them a buck; this leads to less innovation and decline in quality.
• JNSx07 (Manhattan Associates): But no one really cares… CEO only cares about quarterly results and share value.

Cloudflare lays off 1,100 people (r/technology)

• davidcelis: I know it’s probably automatic because of the similar titles, but hitting the bottom of the layoff announcement only to be recommended their post from last year about hiring 1,111 interns in 2026 is a reaaal bad look
• millanstar: So we can expect a major outtage in the coming months
• Albert3232: Being employed in the tech industry must be so stressful. Imagine having a mortgage to pay and knowing you can be laid off at any moment.

PSA: Instagram Encrypted Messaging Ends on Friday, May 8 (r/technology)

• Currentshop333: If this actually happens then a lot of people are going to realize how much they relied on encrypted DMs without even thinking about it. Feels like every platform keeps moving backwards on privacy lately.
• FlukyS: At that point they might as well remove messaging
• holyoctopus: Honestly anyone using any Meta products today and expecting privacy are out of their minds. Delete your Facebook and Instagram, stop using meta products if you care about this.

Apple is putting cameras in AirPods. What could possibly go wrong? (r/technology)

• loves_grapefruit: Why are they so obsessed with cameras? Why does it all have to lead to cameras??
• dichron: God that article was painful to read. Why do AI writers always have to say the same thing multiple times over in slightly different ways?
• VincentNacon: Did they forget that people have mid-to-long hair?

I’ve been working with a Vibe Coder and this has been my experience (r/webdev)

• AlmightyLarcener: I’m completely in the same situation. PRs with 2000 line changes. One of them contains Sentry.io, even though we do not use it. Every response is from Claude, I don’t even argue any more.
• shakjj: Sounds like YOU are vibecoding (by working with him). He is just a proxy. Sad to see people comfortable on that role.
• GASd-: people shipping code without any architectural considerations are nightmares

Looking for feedback on AI content in r/programming and the April no-AI trial (r/programming)

• PracticeAccording274: the april trial felt pretty good tbh, less noise in the feed and more actual programming discussions instead of endless “will ai replace us” posts
• davenirline: Oh Please keep it. I think it’s the only one sub that I go to that does this.
• Computer991: It was amazing, please keep it