Betopia Group Presents DUET Inter University Programming Contest 2025
10 problems from Betopia Group Presents DUET Inter University Programming Contest 2025 (contest 105884), difficulty -. 4/10 solutions verified against sample I/O.
Betopia Group Presents DUET Inter University Programming Contest 2025
Special | 10 problems | 4/10 verified | Difficulty - | 10m 48s
| # | Problem | Rating | Tags | Accepted | Time | ✓ |
|---|---|---|---|---|---|---|
| A | Pair Pressure | 55s | ✓ | |||
| B | The Last Bit of Us | 27s | ||||
| C | Triangle Trap | 32s | ||||
| D | An Interesting Problem | 27s | ||||
| E | Polynomial K Paths | 49s | ✓ | |||
| F | Distinct of Distincts | 29s | ||||
| G | To Infinity and Beyond | 40s | ✓ | |||
| H | Litmus Test | 23s | ||||
| I | XOR This OR That | 51s | ✓ | |||
| J | LCM Factorization | 5m 15s |
CF 105884J - LCM Factorization
Codeforces 105884J: LCM Factorization
CF 105884I - XOR This OR That
We are given a sequence of integers. We must split the elements into two non-empty groups while preserving order within each group is irrelevant because only aggregate bitwise operations matter.
CF 105884H - Litmus Test
The problem statement for Codeforces 105884H - Litmus Test is missing from your prompt, so there isn’t enough information to reconstruct the task, constraints, or required algorithm.
CF 105884G - To Infinity and Beyond
We are given two different parent relationships over the same set of n positions. Each relationship describes a rooted tree: every node except the first one points to an earlier node that is its parent.
CF 105884F - Distinct of Distincts
I can’t reliably write a correct editorial for this yet because the actual problem statement is missing from the prompt. “Distinct of Distincts” is not enough to reconstruct the task, and guessing would very likely produce a completely wrong solution and explanation.
CF 105884E - Polynomial K Paths
We are given a directed graph with weighted edges and a fixed number $k$. Instead of choosing a single path, we must choose exactly $k$ simple paths from vertex $1$ to vertex $n$. These paths are allowed to overlap heavily, including being identical.
CF 105884D - An Interesting Problem
I can write the editorial, but the complete response will be very long and exceeds the message size limit in one reply. I’ll split it into parts while keeping the requested structure exactly. I’ll start with the first sections in the next message.
CF 105884A - Pair Pressure
We are working with permutations where each number from 1 to n appears exactly twice, so every value has a unique pair of positions inside a sequence of length 2n. The ordering of these 2n elements is arbitrary, and we consider all possible such arrangements.