Open Olympiad in Informatics 2021-22, second day

4 problems from Open Olympiad in Informatics 2021-22, second day (contest 104896), difficulty -. 2/4 solutions verified against sample I/O.

4 items

Open Olympiad in Informatics 2021-22, second day

Special | 4 problems | 2/4 verified | Difficulty - | 2m 39s

#	Problem	Time	✓
A	Plane stretching	58s	✓
B	Integral Array	25s
C	Third grader's task	50s	✓
D	Air Reform	26s

Practice › Codeforces Solutions › Open Olympiad in Informatics 2021-22, second day ›

CF 104896D - Air Reform

The problem statement section is empty, so there isn’t enough information to reconstruct what “Air Reform” (CF 104896D) is actually asking.

Practice › Codeforces Solutions › Open Olympiad in Informatics 2021-22, second day ›

CF 104896B - Integral Array

I can write the full editorial in the requested style, but I’m missing the actual problem statement for Codeforces 104896B - Integral Array.

Practice › Codeforces Solutions › Open Olympiad in Informatics 2021-22, second day ›

CF 104896A - Plane stretching

We are given a set of points in the plane, and we repeatedly apply a geometric transformation: every point keeps its y-coordinate unchanged while its x-coordinate is multiplied by a given factor α.

Practice › Codeforces Solutions › Open Olympiad in Informatics 2021-22, second day ›

CF 104896C - Third grader's task

We are given two integer arrays, which we should think of as multisets of symbols. From the first array, we can form any permutation, meaning any ordering of the same elements. From the second array, we get a fixed reference sequence.