摘要：描述 You are playing one game called "Number Maze". The map of an example is shown in the following figure. In the map, there are N*N+2 cells. When the 阅读全文

摘要：给定长度为n的数组a，定义一次操作为： 1. 算出长度为n的数组s，使得si= (a[1] + a[2] + ... + a[i]) mod 1,000,000,007； 2. 执行a = s； 现在问k次操作以后a长什么样。 输入描述: 第一行两个整数n，k(1 <= n <= 2000, 0 < 阅读全文