{"trustable":false,"sections":[{"title":"","value":{"format":"MD","content":"Glory非常喜欢玩滑滑梯游戏,下面给出了一个n,m的滑道,其中的数字表示滑道的高度。Glory可以从一个点出发向下滑行,每次只能滑行到相邻的位置(上下左右)中高度严格低于当前高度的地方,不能重复划行已经滑行过的地方,但他希望在这个滑道上滑行尽量远的距离,也即是找一条最长的滑道。"}},{"title":"Input","value":{"format":"MD","content":"第一行输入两个数n,m代表滑梯范围行n和列m(1 \u003c\u003d n,m \u003c\u003d 100)。下面是n行,每行有m个整数,代表高度h,(0\u003c\u003dh\u003c\u003d20000)\n"}},{"title":"Output","value":{"format":"MD","content":"输出一个值,代表Glory能够在滑滑梯上面滑行的最长长度是多少"}},{"title":"Sample Input","value":{"format":"MD","content":"3 3\n9 1 2\n5 6 7\n8 4 3"}},{"title":"Sample Output","value":{"format":"MD","content":"4"}},{"title":"Sample Input","value":{"format":"MD","content":"\n4 7\n7 6 5 4 3 2 1\n1 5 1 1 1 1 1\n1 4 3 1 1 1 1\n1 5 6 7 8 1 1"}},{"title":"Sample Output","value":{"format":"MD","content":"7"}},{"title":"hint","value":{"format":"MD","content":"样例1:7-\u003e6-\u003e4-\u003e3 长度为4"}}]}