SYSU Collegiate Programming Contest 2024 (SYSUCPC 2024), Final

13 problems from SYSU Collegiate Programming Contest 2024 (SYSUCPC 2024), Final (contest 105631), difficulty -. 13/13 solutions verified against sample I/O.

13 items

SYSU Collegiate Programming Contest 2024 (SYSUCPC 2024), Final

Special | 13 problems | 13/13 verified | Difficulty - | 13m 11s

# Problem Rating Tags Accepted Time ✓
A Anniversary Celebration 55s ✓
B Bruhcaea Simulator 1m 23s ✓
C Contest Reactions 1m 5s ✓
D Depths of Cities 55s ✓
E Erasing Numbers 57s ✓
F Finding Maxi-strings 51s ✓
G General Checksum Calculation 52s ✓
H Hoppers and Doors 1m 14s ✓
I Isla Loves Christmas 50s ✓
J Jazz Music from the Er-th 54s ✓
K King of Card Games 1m 4s ✓
L LCM and GCD 1m 5s ✓
M Make SYSU Great Again 3 1m 6s ✓
Practice › Codeforces Solutions › SYSU Collegiate Programming Contest 2024 (SYSUCPC 2024), Final ›

CF 105631H - Hoppers and Doors

We are given a graph that represents a prison-like maze. There is a special starting node where K begins, a set of nodes called hoppers, and another set of nodes called doors. The remaining structure is an undirected graph connecting all nodes.
codeforces competitive-programming Jun 22, 2026
Practice › Codeforces Solutions › SYSU Collegiate Programming Contest 2024 (SYSUCPC 2024), Final ›

CF 105631E - Erasing Numbers

We are given a binary sequence written on a board. Each position contains either 0 or 1, and two players play alternately starting from the leftmost turn. Alice is responsible for interacting with zeros, while Bob is responsible for interacting with ones.
codeforces competitive-programming Jun 22, 2026
Practice › Codeforces Solutions › SYSU Collegiate Programming Contest 2024 (SYSUCPC 2024), Final ›

CF 105631M - Make SYSU Great Again 3

We are given the integers from 1 to n and must place them around a circle in some order. Once the circle is fixed, every consecutive triple of positions is considered, including the wrap-around triples that involve the last and first elements.
codeforces competitive-programming Jun 22, 2026
Practice › Codeforces Solutions › SYSU Collegiate Programming Contest 2024 (SYSUCPC 2024), Final ›

CF 105631K - King of Card Games

We are drawing numbers repeatedly from a set containing all integers from 1 to n, with replacement. Each draw is independent and uniformly random, so any sequence of length m is simply an ordered m-tuple where each position can be any value from 1 to n.
codeforces competitive-programming Jun 22, 2026
Practice › Codeforces Solutions › SYSU Collegiate Programming Contest 2024 (SYSUCPC 2024), Final ›

CF 105631A - Anniversary Celebration

We are given multiple independent scenarios. In each scenario, there are three types of balloons: those labeled S, those labeled Y, and those labeled U. From these balloons we want to repeatedly assemble identical decoration bundles called SYSU sets.
codeforces competitive-programming Jun 22, 2026
Practice › Codeforces Solutions › SYSU Collegiate Programming Contest 2024 (SYSUCPC 2024), Final ›

CF 105631D - Depths of Cities

We start with a tree of cities connected by roads. On top of this tree, we consider a hypothetical operation: for every possible ordered pair of cities $(u, v)$, we temporarily add a new edge between them.
codeforces competitive-programming Jun 22, 2026
Practice › Codeforces Solutions › SYSU Collegiate Programming Contest 2024 (SYSUCPC 2024), Final ›

CF 105631L - LCM and GCD

We are asked to fill an $n times m$ matrix with positive integers up to $10^9$. Instead of arbitrary values, each row and column must satisfy a very specific aggregate constraint.
codeforces competitive-programming Jun 22, 2026
Practice › Codeforces Solutions › SYSU Collegiate Programming Contest 2024 (SYSUCPC 2024), Final ›

CF 105631J - Jazz Music from the Er-th

We are given several independent test cases. Each test case describes a sequence of integers, where each element represents a “rhythmicity value” of a slice of music. There is also a fixed lower bound L.
codeforces competitive-programming Jun 22, 2026
Practice › Codeforces Solutions › SYSU Collegiate Programming Contest 2024 (SYSUCPC 2024), Final ›

CF 105631I - Isla Loves Christmas

We are given a sequence of colored lights laid out in a line. Each position has a color label, and multiple positions may share the same color. On top of this static array, we process a sequence of update operations.
codeforces competitive-programming Jun 22, 2026
Practice › Codeforces Solutions › SYSU Collegiate Programming Contest 2024 (SYSUCPC 2024), Final ›

CF 105631G - General Checksum Calculation

We are given an array of integers, and we need to answer multiple independent queries. Each query specifies a range in the array and a threshold value.
codeforces competitive-programming Jun 22, 2026
Practice › Codeforces Solutions › SYSU Collegiate Programming Contest 2024 (SYSUCPC 2024), Final ›

CF 105631F - Finding Maxi-strings

We are given a string that keeps changing over time, and after each change we must recompute a value that depends only on the current form of the string. For any string $t$, consider all substrings of the current string $s$.
codeforces competitive-programming Jun 22, 2026
Practice › Codeforces Solutions › SYSU Collegiate Programming Contest 2024 (SYSUCPC 2024), Final ›

CF 105631B - Bruhcaea Simulator

We are given two polyline paths that evolve over a shared time axis. One path is defined at odd time steps and the other at even time steps. Each path has $m$ vertices, and at each step its position is an integer height between 1 and $n$.
codeforces competitive-programming Jun 22, 2026
Practice › Codeforces Solutions › SYSU Collegiate Programming Contest 2024 (SYSUCPC 2024), Final ›

CF 105631C - Contest Reactions

The system maintains a live programming contest scoreboard. There are several teams, indexed from 0 to k, and submissions arrive in strictly increasing timestamp order.
codeforces competitive-programming Jun 22, 2026