TheForces Round #41 (Magical-Forces)

5 problems from TheForces Round #41 (Magical-Forces) (contest 105805), difficulty -. 3/5 solutions verified against sample I/O.

5 items

TheForces Round #41 (Magical-Forces)

Special | 5 problems | 3/5 verified | Difficulty - | 4m 5s

#	Problem	Time	✓
A	Submission is All You Need	45s	✓
B	Kaosar Loves Divisors	31s
C	Again Sort Permutation	52s	✓
D	Minimum Inversions	29s
F	Enigmatic Game	1m 28s	✓

Practice › Codeforces Solutions › TheForces Round #41 (Magical-Forces) ›

CF 105805F - Enigmatic Game

We are given an array of positive integers. Two players alternate moves, and a move decreases some array elements by exactly one according to a special rule. A player chooses a value interval $[l,r]$. Every element whose current value lies in $[l,r-1]$ must be decreased by one.

Practice › Codeforces Solutions › TheForces Round #41 (Magical-Forces) ›

CF 105805D - Minimum Inversions

I’m missing the actual problem content (the operations, input meaning, and what “Minimum Inversions” specifically asks for in this version of Codeforces 105805D).

Practice › Codeforces Solutions › TheForces Round #41 (Magical-Forces) ›

CF 105805C - Again Sort Permutation

We are given a permutation of the numbers from 1 to n. An operation chooses two positions whose current values are a and b. If a + b is a composite number, we may swap those two values.

Practice › Codeforces Solutions › TheForces Round #41 (Magical-Forces) ›

CF 105805A - Submission is All You Need

We are given a positive integer $n$. For each test case, we must count how many integers $x$ satisfy $$x + (x bmod n) = n.$$ The input contains up to $10^4$ test cases, and each value of $n$ can be as large as $10^{18}$.

Practice › Codeforces Solutions › TheForces Round #41 (Magical-Forces) ›

CF 105805B - Kaosar Loves Divisors

I don’t have the actual problem statement for Codeforces 105805B - Kaosar Loves Divisors in the prompt, so I can’t reliably reconstruct the intended solution or write a correct editorial without risking inventing details.