2023 CCPC Henan Provincial Collegiate Programming Contest

12 problems from 2023 CCPC Henan Provincial Collegiate Programming Contest (contest 104354), difficulty -. 12/12 solutions verified against sample I/O.

12 items

2023 CCPC Henan Provincial Collegiate Programming Contest

Special | 12 problems | 12/12 verified | Difficulty - | 12m 12s

# Problem Rating Tags Accepted Time ✓
A \u5c0f\u6c34\u736d\u6e38\u6cb3\u5357 52s ✓
B Art for Rest 1m 7s ✓
C Toxel \u4e0e\u968f\u673a\u6570\u751f\u6210\u5668 1m 13s ✓
D Toxel \u4e0e\u591a\u5f69\u7684\u5b9d\u53ef\u68a6\u4e16\u754c 1m 1s ✓
E \u77e9\u9635\u6e38\u620f 59s ✓
F Art for Last 52s ✓
G Toxel \u4e0e\u5b57\u7b26\u753b 54s ✓
H Travel Begins 57s ✓
I \u6570\u6b63\u65b9\u5f62 1m 6s ✓
J Mocha \u6c89\u8ff7\u7535\u5b50\u6e38\u620f 52s ✓
K \u6392\u5217\u4e0e\u8d28\u6570 1m 10s ✓
L \u731c\u6570\u6e38\u620f 1m 9s ✓
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CF 104354L - 猜数游戏

We are playing an interactive game where each round hides a single reduced fraction $frac{p}{q}$, with both numbers in the range up to $10^9$.
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CF 104354K - 排列与质数

We are asked to build a cyclic arrangement of the numbers from 1 to n, meaning we output a permutation where every number appears exactly once and the sequence is considered circular, so the last element is also adjacent to the first.
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CF 104354J - Mocha 沉迷电子游戏

We are given a fixed geometric setup per test case: three points $P, A, B$ that form a non-degenerate isosceles triangle with $PA = PB$, and a line segment $AB$ acting as the “blade”.
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CF 104354I - 数正方形

We are given a large square grid of size $(2n+1) times (2n+1)$. Inside this grid, there are $n$ axis-aligned rectangles. Each rectangle is described by its bottom-left and top-right coordinates.
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CF 104354H - Travel Begins

We are allowed to split a fixed real value $n$ into $k$ nonnegative real parts. Think of this as distributing a total “mass” $n$ across $k$ containers, where each container $ai$ can hold any real amount between $0$ and $n$, as long as everything sums back to $n$.
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CF 104354G - Toxel 与字符画

We are asked to turn a mathematical expression of the form $x^y$ into a fixed-size ASCII artwork. Each test case gives a string representation of two positive integers $x$ and $y$, and we must decide what to draw based on the value of $z = x^y$.
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CF 104354E - 矩阵游戏

We are given a grid of size n by m. Each cell is either a fixed 0, a fixed 1, or a wildcard character that can be converted into a 1, but only up to x times per test case.
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CF 104354F - Art for Last

We are given a sequence of non-negative integers. From this sequence we must choose exactly $k$ elements while preserving their relative order of indices. Once we pick these $k$ values, we look at all pairwise absolute differences between the chosen values.
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CF 104354D - Toxel 与多彩的宝可梦世界

We are given a graph of towns connected by roads, where each road has a color. The graph can contain multiple edges between the same pair of towns and even self-loops, so it is a general multigraph rather than a simple one.
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CF 104354C - Toxel 与随机数生成器

We are given a binary string of length one million that was produced by one of two pseudorandom bit generators based on a fixed seed. The first generator is a standard XorShift64 machine. It starts from the seed once and then evolves a 64-bit state forever.
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CF 104354B - Art for Rest

We are given an array of non-negative integers. For a chosen integer k, we cut the array into consecutive chunks of length k, except the last chunk which may be shorter.
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CF 104354A - 小水獭游河南

We are given a string s and we need to decide whether it can be split into two consecutive parts a and b such that the whole string is exactly a + b. The first part a must be a string where every character is distinct, so no letter appears twice inside a.
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