So apparently after ML problems we are getting crypto problems in ICPC...
Link: https://zhtluo.com/cp/lll-yet-another-paper-reading-problem.html
→ Pay attention
Before contest
Spectral::Cup 2026 Round 2 (Codeforces Round 1100, Div. 1 + Div. 2)
35:23:48
Register now »
Spectral::Cup 2026 Round 2 (Codeforces Round 1100, Div. 1 + Div. 2)
35:23:48
Register now »
*has extra registration
→ Top rated
| # | User | Rating |
|---|---|---|
| 1 | Benq | 3792 |
| 2 | VivaciousAubergine | 3647 |
| 3 | Kevin114514 | 3611 |
| 4 | jiangly | 3583 |
| 5 | strapple | 3515 |
| 6 | tourist | 3470 |
| 7 | Radewoosh | 3415 |
| 8 | Um_nik | 3376 |
| 9 | maroonrk | 3361 |
| 10 | XVIII | 3345 |
→ Top contributors
| # | User | Contrib. |
|---|---|---|
| 1 | Qingyu | 162 |
| 2 | adamant | 148 |
| 3 | Um_nik | 146 |
| 4 | Dominater069 | 143 |
| 5 | errorgorn | 141 |
| 6 | cry | 138 |
| 7 | Proof_by_QED | 136 |
| 8 | YuukiS | 135 |
| 9 | chromate00 | 134 |
| 10 | soullless | 133 |
→ Find user
→ Recent actions
Codeforces (c) Copyright 2010-2026 Mike Mirzayanov
The only programming contests Web 2.0 platform
Server time: May/22/2026 06:11:12 (g1).
Desktop version, switch to mobile version.
Supported by
This can also be solved with LLL
This is LWE right... Noooooooo how is this ICPC
Let me add that another (interesting) task that can be done with LLL is recovering the seed of a truncated LCG (Linear Congruential Generator, a type of RNG) from its output.