提交时间:2026-06-12 14:52:56
运行 ID: 90989
n = int(input()) h = list(map(int, input().split())) if n <= 1: print(n) else: up = 1 down = 1 for i in range(1, n): if h[i] > h[i-1]: up = down + 1 elif h[i] < h[i-1]: down = up + 1 # if equal, do nothing print(max(up, down))