【入门】判定字符位置

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	ZXFFJJ	5ms	384 KiB	C++11	380 Bytes	2023-12-14 20:02:32
AC	李大钊	5ms	376 KiB	C++11	332 Bytes	2023-11-4 1:10:51
AC	让我睡觉	6ms	384 KiB		505 Bytes	2022-3-30 19:25:11
AC	小熊	68ms	3.4 MiB	Python 3	134 Bytes	2023-4-27 12:58:27