摘要：
You are an adventurer currently journeying inside an evil temple. After defeating a couple of weak zombies, you arrived at a square room consisting of 阅读全文
摘要：
A country has n cities. Initially, there is no road in the country. One day, the king decides to construct some roads connecting pairs of cities. Road 阅读全文
摘要：
You are given a rectangular cake, represented as an r × c grid. Each cell either has an evil strawberry, or is empty. For example, a 3 × 4 cake may lo 阅读全文