摘要：
For each test case, in the first line, you should print the maximum sum. In the next line you should print a string consisting of "L","R","U" and "D", 阅读全文
摘要：
Sample Input 5 2 -2 0 2 0 -2 0 5 2 3 2 3 3 3 3 5 2 -2 0 2 0 -2 0 5 2 3 2 3 3 3 3 Sample Output 12 5 12 5 求最多多少序列满足，前半部分满足d（j+1） = d（j）+d1，后半部分d（j+1）= 阅读全文