Интернет-олимпиады, Сезон 2024-2025, Первая личная олимпиада

4 problems from Интернет-олимпиады, Сезон 2024-2025, Первая личная олимпиада (contest 105715), difficulty -. 3/4 solutions verified against sample I/O.

4 items

Интернет-олимпиады, Сезон 2024-2025, Первая личная олимпиада

Special | 4 problems | 3/4 verified | Difficulty - | 3m 8s

#	Problem	Time	✓
A	\u0428\u0435\u0441\u0442\u0438\u0443\u0433\u043e\u043b\u044c\u043d\u0430\u044f \u0441\u0435\u0442\u043a\u0430	26s
B	\u0421\u0442\u0440\u0430\u043d\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0439 \u043f\u043e\u043b\u043a\u043e\u0432\u043e\u0434\u0435\u0446	54s	✓
C	\u0422\u043e\u0440\u0433\u043e\u0432\u043b\u044f	1m 7s	✓
D	\u0414\u0435\u0440\u0435\u0432\u043e \u043d\u0430\u0432\u044b\u043a\u043e\u0432	41s	✓

Practice › Codeforces Solutions › Интернет-олимпиады, Сезон 2024-2025, Первая личная олимпиада ›

CF 105715D - Дерево навыков

The structure is a rooted tree of skills, where every node represents a skill in a game progression system. Each skill has a type, and unlocking a skill requires first unlocking its ancestors in the tree.

Practice › Codeforces Solutions › Интернет-олимпиады, Сезон 2024-2025, Первая личная олимпиада ›

CF 105715C - Торговля

We are given a list of distinct item prices. Each item must be increased or left unchanged, and we choose new prices so that the final system uses exactly k distinct values. Every item is assigned one final price, and that price must be at least its original value.

Practice › Codeforces Solutions › Интернет-олимпиады, Сезон 2024-2025, Первая личная олимпиада ›

CF 105715B - Странствующий полководец

We are playing an interactive game on an infinite integer grid. A hidden token starts somewhere at integer coordinates, and its position changes only when we explicitly send a command.

Practice › Codeforces Solutions › Интернет-олимпиады, Сезон 2024-2025, Первая личная олимпиада ›

CF 105715A - Шестиугольная сетка

The statement for Codeforces 105715A (“Шестиугольная сетка”) is not included in your prompt, so I cannot reliably reconstruct the intended problem model or derive a correct algorithm without guessing.