Problem Description Imagine you have a special typing machine with the following keys: Key 1: Prints the letter 'A' on the screen. Key 2: (Ctrl-A) Selects everything that has been printed on the screen. Key 3: (Ctrl-C) Copies the selected content to a clipboard. Key 4: (Ctrl-V) Pastes

Problem Description Given three integers A, B, and C, the goal is to compute the sum of all possible numbers that can be formed using the digit 4 up to A times, the digit 5 up to B times, and the digit 6 up to C times. Note: Output the

Problem Description You are given an array A of integers with size N. Additionally, there are Q queries to be processed on this array. For each query, three integers L, R, and X are provided, and the task is to compute the sum of the XOR between X and each

Problem Description There are N individuals. For each pair of people (i, j), their friendship value is given by A[i][j]. The goal is to divide these N people into two distinct groups such that every individual belongs to exactly one group, and both groups contain at least one

Problem Description Imagine a system where vehicles travel in multiples of 1 kilometer. A vehicle can either remain stationary or travel distances like 2 km, 5 km, or 10 km, but not fractional distances such as 2.5 km or 6.34 km. In this system, a traffic officer stands