Интернет-олимпиады, Сезон 2023-2024, Третья командная олимпиада

12 problems from Интернет-олимпиады, Сезон 2023-2024, Третья командная олимпиада (contest 104840), difficulty -. 8/12 solutions verified against sample I/O.

12 items

Интернет-олимпиады, Сезон 2023-2024, Третья командная олимпиада

Special | 12 problems | 8/12 verified | Difficulty - | 13m 49s

# Problem Rating Tags Accepted Time ✓
A \u041a\u043b\u043e\u043d\u044b 46s ✓
B \u0414\u0436\u0435\u0440\u0440\u0438\u043a\u043a\u0438 \u0438 \u0441\u0442\u0440\u043e\u043a\u0430 47s ✓
C \u042e\u043d\u0438\u0442\u0438 1m 4s ✓
D Ancestral Problem 1m 41s
E \u0420\u0438\u043a\u0430\u043d\u0443\u0442\u0430\u044f \u043f\u0435\u0440\u0435\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0430 55s ✓
F Sequence Riddle 1m 11s ✓
G \u0412\u043e\u0437\u0432\u0440\u0430\u0449\u0435\u043d\u0438\u0435 \u0417\u043b\u043e\u0433\u043e \u041c\u043e\u0440\u0442\u0438 53s ✓
H Tunnel 1m 22s
I \u041f\u043e\u0433\u043e\u043d\u044f \u0437\u0430 \u0420\u0438\u043a\u043e\u043c \u041f\u0440\u0430\u0439\u043c\u043e\u043c 47s ✓
J Secret Folder 1m 30s
K Space Battleship 2m 4s
L \u041f\u0443\u0442\u0435\u0448\u0435\u0441\u0442\u0432\u0438\u0435 \u043a \u043f\u0440\u0438\u043c\u0438\u0442\u0438\u0432\u0443 49s ✓
Practice › Codeforces Solutions › Интернет-олимпиады, Сезон 2023-2024, Третья командная олимпиада ›

CF 104840K - Space Battleship

We are given a rectangular grid that represents a partially observed battlefield for a simplified Battleship-like game. Each cell of the grid can be in one of three states: it is either known to be empty water, known to contain a ship segment, or unknown.
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CF 104840L - Путешествие к примитиву

We are given a set of words, all distinct, and a directed system of allowed replacements between them. Each replacement rule says that one word can be substituted by another, and this process can be repeated any number of times, following chains of replacements.
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CF 104840J - Secret Folder

We are given several strings, and we are allowed to reorder them and glue them together into a single long string. When we glue two strings, we are not simply concatenating them blindly.
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CF 104840H - Tunnel

We are given a set of cars that all enter a tunnel at known times. Each car is uniquely identified, and we also know the exact order in which cars leave the tunnel.
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CF 104840I - Погоня за Риком Праймом

We are given a set of points on a plane, each point representing a possible location where an event can occur. Each point also carries a weight that reflects how important or likely that event is.
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CF 104840G - Возвращение Злого Морти

We are given a collection of segments on the number line. Each segment represents a range of “realities” that must be searched as a single item.
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CF 104840F - Sequence Riddle

We are given a process that builds an infinite sequence by repeatedly selecting a natural number that has not yet appeared anywhere in the sequence and then appending three values derived from it.
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CF 104840D - Ancestral Problem

We are given pairs of trees. For each pair, we want to determine whether the first tree can be transformed into something isomorphic to the second tree after a very specific operation: we are allowed to take the second tree, add new vertices and edges, and then relabel…
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CF 104840E - Риканутая перестановка

We are given a permutation and we repeatedly rotate it left by one position, so the first element moves to the end.
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CF 104840A - Клоны

We are given several independent scenarios. In each scenario, there are $n$ cloned individuals arranged in some order, but we only observe the multiset of labels written on them. Each label is an integer between 1 and $n$.
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CF 104840C - Юнити

We are given a permutation placed in a stack-like structure a, where only the last element of a is directly accessible. There is a second empty stack b.
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CF 104840B - Джеррикки и строка

We are given a string made of lowercase English letters. Two players take turns playing a game on this string. On each move, a player chooses two distinct letters that both currently appear in the string.
codeforces competitive-programming Jun 28, 2026