{"trustable":false,"sections":[{"title":"","value":{"format":"HTML","content":"\u003cdiv class\u003d\"ptx\" lang\u003d\"en-US\"\u003exnk想要在家里造一个上楼的楼梯,众所周知,由于是上楼,而且xnk也不傻,一个楼梯的前一级肯定要小于下一级(即满足严格单调上升),由于xnk是x里村首富,当然要彰显自己的贵族气质,所以他希望楼梯越长越好\u003c/div\u003e"}},{"title":"Input","value":{"format":"HTML","content":"\u003cdiv class\u003d\"ptx\" lang\u003d\"en-US\"\u003e现在有n个木板(n\u003c\u003d1000),然后是i个数,表示第i块木板做成楼梯有多高。 \u003c/div\u003e"}},{"title":"Output","value":{"format":"HTML","content":"\u003cdiv class\u003d\"ptx\" lang\u003d\"en-US\"\u003e输出xnk首富能做成的最长的楼梯的长度以彰显他的贵族气质 \u003c/div\u003e"}},{"title":"Sample Input","value":{"format":"HTML","content":"\u003cpre class\u003d\"sio\"\u003e7\n1 7 3 5 9 4 8\u003c/pre\u003e"}},{"title":"Sample Output","value":{"format":"HTML","content":"\u003cpre class\u003d\"sio\"\u003e4\n\u003c/pre\u003e"}}]}