小写字母转大写字母

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	测试001	-	-	C++14	118 Bytes	2026-5-23 13:37:41
AC	测试007	-	-	C++14	100 Bytes	2026-5-23 13:47:25
AC	测试008	-	-	C++14	108 Bytes	2026-5-23 14:50:20
AC	admin	10ms	20.4 MiB	C++14	108 Bytes	2026-5-20 14:09:48
AC	ALT_wangyanran	10ms	20.4 MiB	C++14	118 Bytes	2026-5-30 16:03:27
AC	ALT_yangxihan	10ms	20.4 MiB	C++14	101 Bytes	2026-5-23 15:27:17