보안 / 개발 챌린저가 목표

문제 설명 Bob has a strange counter. At the first second, it displays the number 3. Each second, the number displayed by the counter decrements by 1 until it reaches 1. The couner counts down in cycles. In next second, the timer resets to 2 × the initial number for the prior cycle and continues counting down. The diagram below shows the counter values for each time t in the first three cycles: Find ..

문제 설명 You wish to buy video games from the famous online video game store Mist. Usually, all games are sold at the same price, p dollars. However, they are planning to have the seasonal Halloween Sale next month in which you can buy games at a cheaper price. Specifically, the first game you buy during the sale will be sold a p dollars, but every subsequent game you buy will be sold at exactly d ..