【字符串2】字符串插入问题

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	ByWCfFtIRi	1212ms	64.6 MiB	PyPy3	158 Bytes	2026-4-11 17:28:06
AC	LWBO5qKoEh	1213ms	64.7 MiB	PyPy3	494 Bytes	2026-4-27 18:00:42
AC	gGESWMtLwB	1214ms	64.7 MiB	PyPy3	195 Bytes	2026-4-8 12:57:57
AC	Morrow	1217ms	64.5 MiB	PyPy3	207 Bytes	2026-4-11 15:36:02
AC	a6P0H6Nfn6	1221ms	64.7 MiB	PyPy3	494 Bytes	2026-8-5 20:16:42
AC	6FElOx71ec	1222ms	64.5 MiB	PyPy3	204 Bytes	2026-4-5 14:48:10
AC	rxdcjsyzds	1223ms	64.8 MiB	PyPy3	270 Bytes	2026-5-13 15:41:10
AC	qpwy8UbXPj	1229ms	64.6 MiB	PyPy3	242 Bytes	2026-4-22 13:03:11
AC	柠檬草的味道	1229ms	64.5 MiB	PyPy3	283 Bytes	2026-5-20 10:23:45
AC	jfDx2j2nq1	1231ms	64.7 MiB	PyPy3	610 Bytes	2026-4-1 16:54:40
AC	iFMSCYb28q	1235ms	64.5 MiB	PyPy3	379 Bytes	2026-4-7 11:54:07
AC	StrawHat	1235ms	64.7 MiB	PyPy3	385 Bytes	2026-7-21 11:30:13
AC	1FJpm9tu9W	1239ms	64.5 MiB	PyPy3	267 Bytes	2026-4-17 11:21:28
AC	VDO591XUl5	1249ms	64.6 MiB	PyPy3	465 Bytes	2026-3-26 16:50:40
AC	i3FBAc2rEY	1251ms	64.5 MiB	PyPy3	494 Bytes	2026-6-15 14:38:29
AC	嘻嘻	1252ms	64.7 MiB	PyPy3	263 Bytes	2026-10-12 10:09:45
AC	善良的晚霞	1255ms	64.7 MiB	PyPy3	276 Bytes	2026-8-19 22:00:17
AC	6hRK3EzNa4	1258ms	64.6 MiB	PyPy3	310 Bytes	2026-4-11 20:31:12
AC	B94GVt6qTx	1260ms	64.7 MiB	PyPy3	760 Bytes	2026-4-15 14:34:24
AC	5TWwkXq0WC	1266ms	64.7 MiB	PyPy3	419 Bytes	2026-8-4 17:20:28
AC	9Zb31VCjpx	1274ms	64.6 MiB	PyPy3	202 Bytes	2026-5-8 21:19:17
AC	望着题目沉思	1278ms	64.7 MiB	PyPy3	287 Bytes	2026-4-16 19:26:15
AC	好学的企鹅	1285ms	64.6 MiB	PyPy3	494 Bytes	2026-10-8 19:15:06
AC	活泼的诗人1355	1304ms	64.6 MiB	PyPy3	173 Bytes	2026-10-2 15:33:24
AC	阳光的星光8345	1308ms	64.6 MiB	PyPy3	293 Bytes	2026-9-24 15:48:14
AC	高桥凉介	1308ms	64.6 MiB	PyPy3	243 Bytes	2026-9-17 11:01:41
AC	pooKHhWh6x	1312ms	45.2 MiB	Java	711 Bytes	2026-10-2 15:51:20
AC	2iAudiYRpC	1334ms	64.5 MiB	PyPy3	312 Bytes	2026-8-23 16:33:07
AC	逐梦的微风	1345ms	64.7 MiB	PyPy3	300 Bytes	2026-10-5 21:01:21
AC	ldKsJX6RJS	1346ms	64.7 MiB	PyPy3	494 Bytes	2026-4-22 17:48:03
AC	hhh178438	1354ms	64.6 MiB	PyPy3	196 Bytes	2026-5-13 1:49:08
AC	谦虚的旅人	1357ms	64.6 MiB	PyPy3	217 Bytes	2026-8-21 11:05:48
AC	luchenn	1359ms	64.5 MiB	PyPy3	237 Bytes	2026-4-5 19:55:12
AC	S1ZvzjspmT	1359ms	64.7 MiB	PyPy3	428 Bytes	2026-4-27 16:11:44
AC	voQfEY7oAb	1375ms	64.3 MiB	PyPy3	320 Bytes	2026-7-25 0:17:23
AC	CpbJOCCOp2	1379ms	64.7 MiB	PyPy3	232 Bytes	2026-4-12 18:26:44
AC	JVNAKwyTQj	1401ms	64.7 MiB	PyPy3	276 Bytes	2026-4-27 11:58:10
AC	逐梦的奶茶5708	1402ms	64.7 MiB	PyPy3	169 Bytes	2026-10-8 11:52:46
AC	lybhit2002@163.com	1409ms	64.7 MiB	PyPy3	249 Bytes	2026-5-25 15:46:59
AC	乐观的云朵7451	1414ms	64.6 MiB	PyPy3	151 Bytes	2026-9-16 15:43:26
AC	君往臣	1419ms	64.2 MiB	PyPy3	271 Bytes	2026-6-29 22:12:43
AC	zcj5WXJEy5	1423ms	64.7 MiB	PyPy3	223 Bytes	2026-5-13 21:58:13
AC	追风的浣熊	1450ms	66.6 MiB	PyPy3	409 Bytes	2026-8-30 0:07:43
AC	HfSI6VZ5Gk	1494ms	64.7 MiB	PyPy3	223 Bytes	2026-4-16 19:31:08
AC	V47UPD6OhR	1546ms	64.7 MiB	PyPy3	378 Bytes	2026-5-12 20:55:40
AC	cjc	1560ms	64.6 MiB	PyPy3	231 Bytes	2026-4-20 19:40:02
AC	D2w6zNEQR0	1737ms	46.4 MiB	Java	667 Bytes	2026-9-11 17:00:02