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Problem statement You and your teammates from the anti-bomb squad of the local police have been called to defuse a bomb found in the only pub in town. Fearing the tragic consequences this might produce, you go to the scene as quickly as possible. Af...
NOTE: The problem 141: "Linked List Cycle" is a subproblem of this problem, so the solution can be slightly modified to solve that too. Problem statement Given the head of a linked list, return the node where the cycle begins. If there is no cycle, ...
Solving CodeForces Contest 1918, Problem A: Brick Wall
Problem statement A bracket is considered to be any one of the following characters: (, ), {, }, [, or ]. Two brackets are considered to be a matched pair if the an opening bracket (i.e., (, [, or {) occurs to the left of a closing bracket (i.e., ), ...
Problem statement Given a string s consisting of words and spaces, return the length of the last word in the string. A word is a maximal substring consisting of non-space characters only. Example 1 Input: s = "Hello World" Output: 5 Explanation: The ...
How to compare old and current value of field on change in Django
Problem statement You will be given a square chess board with one queen and a number of obstacles placed on it. Determine how many squares the queen can attack. A queen is standing on an n × n chessboard. The chess board's rows are numbered from 1 to...
This problem is from ICPC competition that one of my followers participated (and asked for explanation) on October 22, 2023. Problem statement Your task is to determine the number of symmetry axis of the given Roman Numeral. The following table from...
Problem statement These are two identical problems: Eolymp 4036 and 4038. The following problem statement is that of 4038, but explanation covers both problems. Given an array of integers. Create a Binary Search Tree from these numbers. If the inse...
