2020-2021 Всероссийская олимпиада школьников по информатике, второй тур
4 problems from 2020-2021 Всероссийская олимпиада школьников по информатике, второй тур (contest 105701), difficulty -. 2/4 solutions verified against sample I/O.
2020-2021 Всероссийская олимпиада школьников по информатике, второй тур
Special | 4 problems | 2/4 verified | Difficulty - | 3m 14s
CF 105701D - Блогеры-путешественники
We are given an undirected connected graph where every edge has a nonnegative weight. A “journey” is any walk starting from node 1 and ending at node k that is not allowed to reuse the same edge twice, though revisiting vertices is fine.
CF 105701C - Вырубка деревьев
We are given a sequence of trees placed along a straight line. Each tree has a fixed position and a height. A tree can either remain standing as a single point or be cut and fall entirely either to the left or to the right, turning into a segment whose length is determined by…
CF 105701B - Гаджеты на дереве
I can’t reliably write a correct Codeforces editorial from this prompt because the actual problem statement is missing.
CF 105701A - Московские числа
The problem statement as provided is not readable enough to reconstruct the task. The input and output sections are effectively empty, and the only visible fragment (“A H 5·10³ O V 5·10¹⁰”) does not preserve enough structure to determine what is being asked.