A. 楼梯、山峰，还是都不是？

状态	递交者	时间	内存	语言	代码	递交时间
AC	wumingzhe	32ms	532 KiB	C++20(O2)	358 Bytes	2026-5-4 10:28:35
AC	fengzihan	32ms	532 KiB	C++20(O2)	415 Bytes	2026-5-2 15:47:00
AC	pengyuchen	32ms	540 KiB	C++20(O2)	358 Bytes	2026-5-4 16:25:41
AC	zhuowen	33ms	536 KiB	C++20(O2)	282 Bytes	2026-5-3 10:48:29
AC	wangzibo	33ms	524 KiB	C++20(O2)	374 Bytes	2026-5-3 22:45:16
AC	raoshiqi	33ms	652 KiB	C++20(O2)	350 Bytes	2026-5-5 13:19:33
AC	caisiyue	33ms	760 KiB	C++20(O2)	298 Bytes	2026-5-2 22:29:43
AC	chenke	34ms	556 KiB	C++20(O2)	489 Bytes	2026-5-2 11:45:30
AC	hantianliang	34ms	760 KiB	C++20(O2)	361 Bytes	2026-4-30 20:31:32
AC	chenyanxi	34ms	540 KiB	C++20(O2)	323 Bytes	2026-5-1 22:50:57
AC	leiyuntian	34ms	532 KiB	C++20(O2)	438 Bytes	2026-5-2 16:09:26