摘要：
矩阵 matrix题目描述给定一个n∗m的矩阵，矩阵中的每个元素aijaij为正整数。接下来规定：1.合法的路径初始从矩阵左上角出发，每次只能向右或向下走，终点为右下角。2.路径经过的n+m−1个格子中的元素为A1,A2…A(n+m−1)，Aavg为Ai的平均数，路... 阅读全文
摘要：
Building Bridges(build)题目描述 A wide river has nn pillars of possibly different heights standing out of the water. They are arranged in ... 阅读全文
摘要：
One-Way Streets (oneway)题目描述 Once upon a time there was a country with nn cities and mm bidirectional roads connecting them. Technica... 阅读全文