Tishreen Collegiate Programming Contest 2024

12 problems from Tishreen Collegiate Programming Contest 2024 (contest 105319), difficulty -. 12/12 solutions verified against sample I/O.

12 items

Tishreen Collegiate Programming Contest 2024

Special | 12 problems | 12/12 verified | Difficulty - | 10m 27s

# Problem Rating Tags Accepted Time ✓
A Gym Tournament 1m 10s ✓
B Broken String 53s ✓
C Leafilians 52s ✓
D Lazy Jaber 51s ✓
E Sorting Cards 54s ✓
F We Want a Lesson 48s ✓
G Less is More 55s ✓
H Divide And Multiply 47s ✓
I The Math Guy 52s ✓
J F Less Than G 48s ✓
K CP and GIT 47s ✓
L Hosen and The Magical Tree! 50s ✓
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CF 105319B - Broken String

We are given a string made of decimal digits. The only allowed operation is to pick a position and move its digit by one step up or down, staying within the range 0 to 9.
codeforces competitive-programming Jun 22, 2026
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CF 105319A - Gym Tournament

We are given a collection of plates, each plate has a weight and a width. From these plates, we are allowed to pick some subset and then split that chosen subset into two disjoint groups, representing the left and right sides of a barbell. Plates not chosen are simply ignored.
codeforces competitive-programming Jun 22, 2026
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CF 105319I - The Math Guy

We start with an array that initially contains the integers from 1 to n in sorted order. The process repeats exactly n times, and each repetition consists of two actions performed on the current array. First, we remove the median element of the array.
codeforces competitive-programming Jun 22, 2026
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CF 105319J - F Less Than G

We are given two arrays of the same length. The first array contributes a cost on any segment through the sum of squares of its values, while the second array contributes a value on a segment through the bitwise OR of its elements, squared.
codeforces competitive-programming Jun 22, 2026
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CF 105319F - We Want a Lesson

We are given a sequence of short text messages, and for each one we must decide how to respond based on a single special phrase.
codeforces competitive-programming Jun 22, 2026
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CF 105319L - Hosen and The Magical Tree!

We are given a weighted tree with up to 100000 vertices. Each edge has a weight that can change over time. Alongside these updates, we must answer queries about pairs of vertices. A type 2 query gives two vertices u and v. Consider the unique simple path between them.
codeforces competitive-programming Jun 22, 2026
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CF 105319G - Less is More

We are given a positive integer $n$. For each $n$, we look at the polynomial expression $$(a+b)^n - a^n - b^n$$ and we ask for which moduli $m$ this expression is always divisible by $m$, no matter which natural numbers $a$ and $b$ we choose.
codeforces competitive-programming Jun 22, 2026
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CF 105319D - Lazy Jaber

We are given an array of integers and we want to count how many of its contiguous subarrays can be made non-decreasing after applying a very specific operation.
codeforces competitive-programming Jun 22, 2026
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CF 105319K - CP and GIT

We are given a collection of uniquely named files. Some of them are currently placed in a special area called Stage, while the rest are in Workspace. We are also given a target set of files that must end up exactly in Stage at the end, with all other files outside Stage.
codeforces competitive-programming Jun 22, 2026
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CF 105319H - Divide And Multiply

We are given an array of integers and we are allowed to repeatedly modify individual elements using two operations.
codeforces competitive-programming Jun 22, 2026
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CF 105319E - Sorting Cards

We are constructing a sequence of $N$ cards, where each card has two attributes: a number in the range $1$ to $M$, and a color in the range $1$ to $K$.
codeforces competitive-programming Jun 22, 2026
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CF 105319C - Leafilians

We are given a tree for each test case. Two players, George and Mohamed, take turns acting on this tree. On every turn, the player performs exactly one of two operations: either they remove all current leaves of the tree, or they choose a single leaf to preserve and remove all…
codeforces competitive-programming Jun 22, 2026