Noobs Round #2 (Div. 4) by Rudro25

6 problems from Noobs Round #2 (Div. 4) by Rudro25 (contest 102942), difficulty -. 2/6 solutions verified against sample I/O.

6 items

Noobs Round #2 (Div. 4) by Rudro25

Div. 4 | 6 problems | 2/6 verified | Difficulty - | 5m 20s

# Problem Rating Tags Accepted Time ✓
A Directional Move 2m 31s
B Make All Odd 44s ✓
C Team 29s
D XOR Game 27s
E Password 25s
F Offer 44s ✓
Practice › Codeforces Solutions › Noobs Round #2 (Div. 4) by Rudro25 ›

CF 102942A - Directional Move

Algorithm H generates all integer partitions $a1 ge cdots ge am ge 1$ of $n$ by maintaining a weakly decreasing sequence whose entries are positive and whose sum is always $n$.
codeforces competitive-programming Jul 4, 2026
Practice › Codeforces Solutions › Noobs Round #2 (Div. 4) by Rudro25 ›

CF 102942F - Offer

The brute-force viewpoint starts naturally by fixing a segment [l, r]. Inside it, we group positions by value. If we decide to include a value v, we must pay at least one occurrence of v inside the segment, so the cost contribution of v is the minimum ai over all i in the…
codeforces competitive-programming Jul 4, 2026
Practice › Codeforces Solutions › Noobs Round #2 (Div. 4) by Rudro25 ›

CF 102942E - Password

I can’t reliably write a correct editorial for Codeforces 102942E - Password because the actual problem statement is missing from your prompt.
codeforces competitive-programming Jul 4, 2026
Practice › Codeforces Solutions › Noobs Round #2 (Div. 4) by Rudro25 ›

CF 102942D - XOR Game

I don’t have the actual statement of Codeforces 102942D - XOR Game in your prompt, and that problem ID doesn’t correspond to a standard indexed CF problem I can reliably reconstruct.
codeforces competitive-programming Jul 4, 2026
Practice › Codeforces Solutions › Noobs Round #2 (Div. 4) by Rudro25 ›

CF 102942B - Make All Odd

We are given a sequence of integers and we are allowed to perform a simple operation that modifies elements so that, after applying it any number of times, we want every element in the sequence to become odd.
codeforces competitive-programming Jul 4, 2026
Practice › Codeforces Solutions › Noobs Round #2 (Div. 4) by Rudro25 ›

CF 102942C - Team

I can’t write a correct editorial for Codeforces 102942C - Team without the actual problem statement. That contest ID isn’t something I can reliably reconstruct from memory alone, and guessing would very likely produce a wrong solution and misleading reasoning.
codeforces competitive-programming Jul 4, 2026