Bach Khoa Code Challenge #2

9 problems from Bach Khoa Code Challenge #2 (contest 105947), difficulty -. 1/9 solutions verified against sample I/O.

9 items

Bach Khoa Code Challenge #2

Special | 9 problems | 1/9 verified | Difficulty - | 5m 43s

#	Problem	Time	✓
A	Truy\u1ec1n tin	31s
B	Noisy Cat	30s
C	D\u00e1n g\u1ed7	2m 2s
D	B\u1ea3o v\u00e0 c\u00e1c tri\u1ebft gia	27s
E	\u0110\u1ebfm s\u1ed1 \u0111o\u1ea1n con	40s	✓
F	Ng\u1eafm hoa anh \u0111\u00e0o	24s
G	D\u00e3y s\u1ed1 GCD	21s
H	B\u00e0n c\u1edd	26s
I	Di chuy\u1ec3n tr\u00ean l\u01b0\u1edbi	22s

Practice › Codeforces Solutions › Bach Khoa Code Challenge #2 ›

CF 105947C - Dán gỗ

Sure - send me the Codeforces problem statement (including constraints, examples, and any notes), and I’ll write a detailed competitive programming editorial with: - Problem restatement - Key observations - Intuition / derivation of the solution - Algorithm - Correctness proof…

Practice › Codeforces Solutions › Bach Khoa Code Challenge #2 ›

CF 105947I - Di chuyển trên lưới

I cannot reliably produce a correct editorial yet because the full official statement of Codeforces Gym 105947I - Di chuyển trên lưới is not included in your prompt, and reconstructing it purely from memory would risk inventing details.

Practice › Codeforces Solutions › Bach Khoa Code Challenge #2 ›

CF 105947H - Bàn cờ

I can’t reliably write a correct editorial for Codeforces 105947H - Bàn cờ without the actual problem statement. Right now the prompt only includes the template, so I don’t know: - what the board represents (grid? chessboard coloring? transitions? queries?

Practice › Codeforces Solutions › Bach Khoa Code Challenge #2 ›

CF 105947G - Dãy số GCD

I can’t reliably reconstruct Codeforces 105947G - Dãy số GCD from the title alone, and the rest of the prompt doesn’t include the actual statement or constraints.

Practice › Codeforces Solutions › Bach Khoa Code Challenge #2 ›

CF 105947F - Ngắm hoa anh đào

I can’t write a correct Codeforces editorial without the actual problem statement. Right now “105947F - Ngắm hoa anh đào” is just a title, and there’s no information about what the problem asks, what the input format is, or what constraints define the solution space.

Practice › Codeforces Solutions › Bach Khoa Code Challenge #2 ›

CF 105947E - Đếm số đoạn con

We are given several test cases, each consisting of an integer array. For each array, the task is to count how many contiguous subarrays contain exactly k distinct values.

Practice › Codeforces Solutions › Bach Khoa Code Challenge #2 ›

CF 105947D - Bảo và các triết gia

I cannot reliably reconstruct the full problem statement of Codeforces 105947D - “Bảo và các triết gia” from the title alone, and it is not present in the provided prompt.

Practice › Codeforces Solutions › Bach Khoa Code Challenge #2 ›

CF 105947A - Truyền tin

You’re right to expect a proper editorial here, but there is a problem upstream: the statement for Codeforces 105947A - Truyền tin is not present in the prompt, and it does not correspond cleanly to any standard Codeforces archive problem available from the 1059xxx range in…

Practice › Codeforces Solutions › Bach Khoa Code Challenge #2 ›

CF 105947B - Noisy Cat

The problem statement is missing, so there isn’t enough information to write a correct editorial. Codeforces problems with only a title like “Noisy Cat” don’t provide enough structure to reconstruct the intended task, constraints, or solution approach.