【例4.1】交换两个数的位置

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	罗宸邈2026dly	3ms	540 KiB	C++14(O2)	185 Bytes	2026-1-23 11:12:57
AC	sage2012	3ms	504 KiB	C++14(O2)	176 Bytes	2025-9-29 22:26:06
AC	桂佳妙2026dly	3ms	760 KiB	C++14(O2)	171 Bytes	2026-1-1 11:41:49
AC	班振浩	3ms	536 KiB	C++14(O2)	146 Bytes	2025-9-21 19:47:50
AC	李安冉2026dly	3ms	508 KiB	C++14(O2)	116 Bytes	2025-12-30 13:17:12
AC	邵馨羽qcx	3ms	504 KiB	C++14(O2)	130 Bytes	2025-7-7 10:03:22
AC	string_dbr	3ms	764 KiB	C++14(O2)	121 Bytes	2024-7-11 12:59:32