【例70.2】求A-B字符串

状态	递交者	时间	内存	语言	代码	递交时间
AC	请大家抖音搜索GEM鄧紫棋 (wyr379946)	3ms	2.2 MiB	C++	319 Bytes	2025-8-21 17:39:13
AC	91 (sjl697923)	3ms	2.2 MiB	C++	262 Bytes	2025-5-17 14:50:35
AC	YSJFWLZZDHHXYM (weienbo)	3ms	2.2 MiB	C++	251 Bytes	2025-5-24 9:06:11
AC	134 (xingshenghao)	3ms	2.2 MiB	C++	314 Bytes	2025-5-17 14:44:26
AC	白金之星[lv.9999999999] (zhouyujun)	3ms	2.2 MiB	C++	275 Bytes	2025-9-14 13:41:48
AC	意义的存在 (guomingze)	3ms	2.2 MiB	C++	265 Bytes	2025-5-17 13:41:02
AC	guozhanji	3ms	2.2 MiB	C++	251 Bytes	2025-5-24 9:06:38
AC	teacher_yang (yangmingzhu)	4ms	2.2 MiB	C++	286 Bytes	2025-5-17 14:49:38
AC	秦百胜 (wanglizhi)	4ms	2.2 MiB	C++	282 Bytes	2025-8-17 15:38:35
AC	篝氏 (zhangboao)	4ms	2.2 MiB	C++	276 Bytes	2025-8-17 15:44:39