题型测试：文件 IO 测试

状态	递交者	时间	内存	语言	代码	递交时间
AC	lsrsrl	31ms	416 KiB	C++14[O2]	244 Bytes	2026-1-26 18:40:41
AC	UID 1152	34ms	512 KiB	C++14[O2]	174 Bytes	2024-8-16 10:52:33
AC	UID 973	36ms	512 KiB	C++14[O2]	191 Bytes	2025-1-3 16:20:15
AC	lly336699	36ms	384 KiB	C++14[O2]	1.2 KiB	2024-8-13 13:50:05
AC	wangpeixuan	52ms	516 KiB	C++14[O2]	250 Bytes	2026-10-5 13:36:19
AC	lyh	67ms	420 KiB	C++14[O2]	256 Bytes	2026-8-20 20:43:32