前三题随便写,D题是一道dfs的水题,但当时没有找到规律,直接卡到结束 A - Kth Term / Time Limit: 2 sec / Memory Limit: 1024 MB Score : 100100 points Problem Statement Print the KK-th element of the following sequence of length 3232: 1, 1, 1, 2, 1, 2, 1, 5, 2, 2, 1, 5, 1, 2, 1, 14, 1…