Go
medium
Structs
Task management system with priorities
Develop a program for managing a task list. Each task is described by a Task structure with fields: ID (int), Title (str…
✅ 0 solved
📅 2026-05-11
C++
medium
Recursion
Recursive Anagram Check
Given two strings. It is required to use recursion to check whether they are anagrams (i.e., contain the same characters…
✅ 0 solved
📅 2026-05-11
Python
easy
Algorithms
Sorting by the last digit
Write a program that sorts a list of integers in ascending order by the last digit. If the last digits are the same, the…
✅ 0 solved
📅 2026-05-11
TypeScript
hard
Math
Calculating the maximum product of a subsequence with prime factorization
Given a sequence of integers a1, a2, ..., an. It is necessary to find the maximum product of a subsequence (not necessar…
✅ 0 solved
📅 2026-05-11
C#
hard
Algorithms
Sorting strings by length and lexicographically
Given a string containing words separated by spaces. It is necessary to sort the words first by increasing length, and f…
✅ 0 solved
📅 2026-05-11
Swift
easy
Algorithms
Sorting by the last digit
Write a program that sorts an array of integers in ascending order by the last digit. If the last digits are equal, the …
✅ 0 solved
📅 2026-05-11
PHP
hard
Json
Recursive JSON merging with type overriding
Write a PHP script that accepts two JSON objects (each on a separate line of stdin) and performs a recursive merge. If k…
✅ 0 solved
📅 2026-05-11
Rust
easy
Algorithms
Sorting by the last digit
Write a program that reads an array of integers and sorts it in ascending order by the last digit of each number. If the…
✅ 0 solved
📅 2026-05-11
C++
easy
Vectors
Sorting by string length in a vector
Write a program that reads the number of lines, then the lines themselves, stores them in a std::vector, sorts them by a…
✅ 0 solved
📅 2026-05-11
Kotlin
hard
Math
Calculating the number π using the Monte Carlo method with a given accuracy
It is necessary to compute an approximate value of π using the Monte Carlo method. To do this, points are randomly gener…
✅ 0 solved
📅 2026-05-11
Java
easy
Collections
Removing duplicates from a list of strings
Write a program that reads lines from standard input, stores them in an ArrayList, and then removes all duplicates, leav…
✅ 0 solved
📅 2026-05-11
JavaScript
medium
Arrays
Search for unique elements in the intersection of two arrays
Two arrays of integers are given. It is necessary to find all unique elements that are present in both arrays and output…
✅ 0 solved
📅 2026-05-11
Python
hard
Math
Reconstruction of a convex polygon from a set of distances
Given a set of N points on a plane that form a convex polygon in traversal order. All pairwise distances between the ver…
✅ 0 solved
📅 2026-05-11
Swift
hard
Math
Calculating the sum of digits in the factorial of a number
Given a natural number n (1 ≤ n ≤ 1000). It is necessary to calculate the factorial of n, and then find the sum of all d…
✅ 0 solved
📅 2026-05-11
Go
easy
Algorithms
Sorting numbers in ascending order
Write a program that reads a sequence of integers and outputs them in ascending order. The first line contains the numbe…
✅ 0 solved
📅 2026-05-11
C#
medium
Math
Here is the translation of the programming task text from Russian to English:
Armstrong numbers in a range
Write a program that finds all Armstrong numbers in a given range from A to B inclusive. An Armstrong number is a number…
✅ 0 solved
📅 2026-05-11
TypeScript
medium
Generics
Generalized array merging function with a custom comparator
Implement a generic function `mergeArrays` that takes two arrays of elements of type `T` and a comparator function `comp…
✅ 0 solved
📅 2026-05-11
Rust
hard
Math
Calculation of the multiplicative Euler's totient function for large numbers
Given a natural number n (1 ≤ n ≤ 10^12). It is necessary to compute the value of Euler's totient function φ(n) — the nu…
✅ 0 solved
📅 2026-05-11
PHP
medium
Date
Determining the day of the week by date in the format 'YYYY-MM-DD'
Write a program that takes a date string in the format 'YYYY-MM-DD' and outputs the day of the week (in Russian) for tha…
✅ 0 solved
📅 2026-05-11
C++
hard
Algorithms
Sorting by key with duplicate removal
Given an array of integers. It is necessary to sort it in ascending order, removing all duplicate values, but with one c…
✅ 0 solved
📅 2026-05-11
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