【例】字符大小写判断

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	刘思锐	28ms	6.1 MiB	C++14(O2)	189 Bytes	2024-9-21 14:45:50
AC	张天源	29ms	6.2 MiB	C++14(O2)	218 Bytes	2025-1-12 20:04:29
AC	方一帆	30ms	6.1 MiB	C++14(O2)	184 Bytes	2024-8-21 15:05:37
AC	冯昱哲	125ms	6.2 MiB	C++14(O2)	153 Bytes	2025-1-16 15:12:34