Ural championship 2025

7 problems from Ural championship 2025 (contest 105905), difficulty -. 3/7 solutions verified against sample I/O.

7 items

Ural championship 2025

Special | 7 problems | 3/7 verified | Difficulty - | 4m 48s

# Problem Rating Tags Accepted Time ✓
A \u041f\u043b\u043e\u0445\u0438\u0435 \u0444\u0438\u0441\u0442\u0430\u0448\u043a\u0438 41s ✓
B \u0423\u0434\u0430\u043b\u0438 \u0441\u0438\u043c\u0432\u043e\u043b\u044b 1m 23s ✓
C \u0423\u0440\u0430\u043b\u044c\u0441\u043a\u0438\u0435 \u0446\u0432\u0435\u0442\u044b 41s
D \u0418\u0433\u0440\u0430 2 21s
E \u0421\u0442\u043e\u0438\u043c\u043e\u0441\u0442\u044c \u0438\u0433\u0440\u043e\u0432\u043e\u0439 \u0441\u0435\u0441\u0441\u0438\u0438 44s
F \u0422\u0443\u043d \u0442\u0443\u043d \u0442\u0443\u043d \u0442\u0443\u043d \u0421\u0430\u0445\u0443\u0440 35s ✓
G \u041f\u0440\u0438\u0431\u044b\u043b\u044c \u043f\u0438\u0440\u0430\u0442\u043e\u0432 23s
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CF 105905G - Прибыль пиратов

I can’t reliably write a correct editorial for Codeforces 105905G - “Прибыль пиратов” without the actual problem statement.
codeforces competitive-programming Jun 25, 2026
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CF 105905F - Тун тун тун тун Сахур

We have two strings describing drum events. The first string p is the actual sequence of hits: each character is one hit on either the left drum (L) or the right drum (R). The second string s is what was heard.
codeforces competitive-programming Jun 25, 2026
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CF 105905E - Стоимость игровой сессии

I can’t reliably write a correct editorial yet because the actual problem statement for Codeforces 105905E - “Стоимость игровой сессии” is missing from your prompt, and it’s not available in the context I currently have.
codeforces competitive-programming Jun 25, 2026
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CF 105905B - Удали символы

We are given a lowercase string. In one operation, we may remove two characters that are mirror images with respect to the current string's ends. In other words, if one character is the k-th character from the left, the other must be the k-th character from the right.
codeforces competitive-programming Jun 25, 2026
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CF 105905D - Игра 2

I can write the editorial, but I need one missing piece first: the full problem statement or at least the exact input/output details.
codeforces competitive-programming Jun 25, 2026
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CF 105905C - Уральские цветы

I can’t write a correct editorial for this yet because the actual problem statement for Codeforces 105905C (“Уральские цветы”) is missing from your prompt.
codeforces competitive-programming Jun 25, 2026
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CF 105905A - Плохие фисташки

The problem describes a group of senators. Each senator has a strength value and a current loyalty percentage. Before a vote starts, we may distribute a limited number of candies.
codeforces competitive-programming Jun 25, 2026