2024 Xian Jiaotong University Programming Contest

15 problems from 2024 Xian Jiaotong University Programming Contest (contest 105176), difficulty -. 5/15 solutions verified against sample I/O.

15 items

2024 Xian Jiaotong University Programming Contest

Special | 15 problems | 5/15 verified | Difficulty - | 8m 56s

# Problem Rating Tags Accepted Time ✓
A \u4ea4\u5c0f\u897f\u7684\u793c\u7269 25s
B \u8f6c\u5440\u8f6c 30s
C \u6995\u6811\u4e4b\u5fc3 40s
D \u745f\u8389\u59c6\u7684\u5bb4\u4f1a 24s
E \u96ea\u4e2d\u697c 28s
F Everyone's ALL IN 23s
G \u5faa\u73af\u79fb\u4f4d 45s ✓
H \u56fe\u4e0a\u64cd\u4f5c 53s ✓
I \u547d\u4ee4\u884c 31s
J \u6700\u540e\u4e00\u5757\u77f3\u5934\u7684\u91cd\u91cf 35s ✓
K \u5d29\u574f\uff1a\u661f\u7a79\u94c1\u9053 28s
L \u52d8\u63a2\u961f 29s
M \u751f\u547d\u6e38\u620f 39s ✓
N \u5723\u8bde\u6811 25s
O \u7b5b\u6cd5 1m 21s ✓
Practice › Codeforces Solutions › 2024 Xian Jiaotong University Programming Contest ›

CF 105176N - 圣诞树

I can’t write a correct Codeforces editorial for this problem yet because the actual problem content is missing.
codeforces competitive-programming Jun 27, 2026
Practice › Codeforces Solutions › 2024 Xian Jiaotong University Programming Contest ›

CF 105176L - 勘探队

I can’t produce a correct Codeforces-style editorial from just the title and empty I/O. “105176L - 勘探队” is missing the actual problem statement, constraints, and samples.
codeforces competitive-programming Jun 27, 2026
Practice › Codeforces Solutions › 2024 Xian Jiaotong University Programming Contest ›

CF 105176K - 崩坏：星穹铁道

The problem as provided does not contain any usable statement beyond the title. There is no description of the input format, output requirements, constraints, or even the task to be solved.
codeforces competitive-programming Jun 27, 2026
Practice › Codeforces Solutions › 2024 Xian Jiaotong University Programming Contest ›

CF 105176I - 命令行

The problem statement is effectively missing here. All we have is the title “命令行” and empty input/output sections, which is not enough to reconstruct the task.
codeforces competitive-programming Jun 27, 2026
Practice › Codeforces Solutions › 2024 Xian Jiaotong University Programming Contest ›

CF 105176F - Everyone's ALL IN

I can’t write a correct editorial for that problem yet because the actual statement is missing from your prompt.
codeforces competitive-programming Jun 27, 2026
Practice › Codeforces Solutions › 2024 Xian Jiaotong University Programming Contest ›

CF 105176E - 雪中楼

I can’t write a correct editorial for this yet because the actual problem content is missing. Right now the statement only shows the title (“雪中楼”) and placeholders for input/output, but none of the real problem definition, constraints, or samples.
codeforces competitive-programming Jun 27, 2026
Practice › Codeforces Solutions › 2024 Xian Jiaotong University Programming Contest ›

CF 105176D - 瑟莉姆的宴会

I don’t have the actual problem statement content for Codeforces 105176D - 瑟莉姆的宴会 from what you provided - only the title. Without the rules, input format, and task description, I can’t reliably reconstruct the solution or write a correct editorial.
codeforces competitive-programming Jun 27, 2026
Practice › Codeforces Solutions › 2024 Xian Jiaotong University Programming Contest ›

CF 105176C - 榕树之心

The problem statement you provided is essentially empty, so there is no defined input format, output requirement, or constraints to base an editorial on.
codeforces competitive-programming Jun 27, 2026
Practice › Codeforces Solutions › 2024 Xian Jiaotong University Programming Contest ›

CF 105176B - 转呀转

I can’t write a correct editorial from that input because the actual problem statement is missing. Right now I only see the title “转呀转” with no description, input/output format, or constraints.
codeforces competitive-programming Jun 27, 2026
Practice › Codeforces Solutions › 2024 Xian Jiaotong University Programming Contest ›

CF 105176A - 交小西的礼物

The problem statement you provided is essentially empty, so there is no way to reconstruct the task, constraints, or required algorithm. Right now we only have the title “A 交小西的礼物” and no description of what the input contains or what output is expected.
codeforces competitive-programming Jun 27, 2026
Practice › Codeforces Solutions › 2024 Xian Jiaotong University Programming Contest ›

CF 105176O - 筛法

We are asked to evaluate a double sum over all ordered pairs of integers from 1 to n. For each pair (i, j), we check whether i and j are coprime, and if they are, we add max(i, j) to the answer. If they are not coprime, the pair contributes nothing.
codeforces competitive-programming Jun 27, 2026
Practice › Codeforces Solutions › 2024 Xian Jiaotong University Programming Contest ›

CF 105176M - 生命游戏

The problem is based on a grid of cells where each cell is either alive or dead, and the grid evolves over discrete time steps according to fixed local rules.
codeforces competitive-programming Jun 27, 2026
Practice › Codeforces Solutions › 2024 Xian Jiaotong University Programming Contest ›

CF 105176J - 最后一块石头的重量

We are given a collection of stones, each stone having a positive integer weight. The process repeatedly takes the two heaviest stones available, destroys both, and if their weights are different, a new stone is produced whose weight equals the difference of the two.
codeforces competitive-programming Jun 27, 2026
Practice › Codeforces Solutions › 2024 Xian Jiaotong University Programming Contest ›

CF 105176H - 图上操作

The problem titled “Graph Operations” describes a dynamic process on a graph where the structure evolves through a sequence of edge insertions, and we must continuously maintain information about reachability from a fixed source node, specifically node 1.
codeforces competitive-programming Jun 27, 2026
Practice › Codeforces Solutions › 2024 Xian Jiaotong University Programming Contest ›

CF 105176G - 循环移位

We are dealing with a sequence of elements arranged in a circle. A cyclic shift operation moves all elements either to the left or to the right, wrapping around the ends so that nothing is lost.
codeforces competitive-programming Jun 27, 2026