【二分1】查询是否存在某个数

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	nwpu_hang	8610ms	102.4 MiB	Java	758 Bytes	2025-2-18 16:22:57
AC	CodeFuncb4c1fa5aa	8643ms	103.3 MiB	Java	1.2 KiB	2025-2-5 9:01:29
AC	1mhSYUGRmY	8671ms	119.7 MiB	Java	831 Bytes	2026-7-27 16:12:44
AC	tt	8692ms	102.9 MiB	Java	917 Bytes	2025-2-6 18:05:53
AC	Youngsq	8734ms	103.5 MiB	Java	1019 Bytes	2025-3-14 21:24:42
AC	丁花	8797ms	101.6 MiB	Java	800 Bytes	2025-3-11 19:45:25
AC	风梳沐涟	8810ms	109.9 MiB	Java	1005 Bytes	2026-4-17 10:27:59
AC	CodeFun3d12f40d1a	8864ms	105.4 MiB	Java	939 Bytes	2025-3-10 20:58:53
AC	CodeFunc42187f2a7	8906ms	131.1 MiB	Java	981 Bytes	2025-9-22 20:59:10
AC	CodeFun0dfdf10fa9	8926ms	119.3 MiB	Java	922 Bytes	2025-9-17 19:25:07
AC	weXFL6r4hi	9155ms	127.5 MiB	Java	1 KiB	2026-10-20 19:29:47
AC	CodeFun8c86b655b9	9190ms	105.5 MiB	Java	875 Bytes	2025-3-17 19:18:02
AC	wangwei2025	9250ms	104 MiB	Java	950 Bytes	2025-3-10 10:34:15
AC	CodeFun373dfd78f5	9451ms	81.2 MiB	Java	1.1 KiB	2025-2-27 20:23:50
AC	CodeFun23cb2ce134	9505ms	122.8 MiB	Java	988 Bytes	2025-9-29 16:36:12
AC	CodeFun5dee90a647	10063ms	119.1 MiB	Java	987 Bytes	2025-9-29 15:20:40
AC	CodeFun1506125534	10069ms	121.9 MiB	Java	978 Bytes	2025-9-29 21:10:02
AC	冷静的流星8210	10075ms	121.4 MiB	Java	1 KiB	2026-10-9 21:53:16
AC	pooKHhWh6x	10434ms	123.7 MiB	Java	962 Bytes	2026-10-8 20:40:20
AC	CodeFun54e70c1a8b	10542ms	129.1 MiB	Java	1.2 KiB	2025-9-24 18:35:05