计算(a+b)×c的值

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	BC20280086	18ms	380 KiB	C++17(O2)	132 Bytes	2025-11-21 11:42:34
AC	BC20280081	20ms	380 KiB	C++17(O2)	121 Bytes	2025-11-22 10:43:34
AC	BC20280018	21ms	504 KiB	C++17(O2)	123 Bytes	2025-11-28 11:45:33
AC	BC20280013	22ms	508 KiB	C++23(O2)	149 Bytes	2026-4-20 9:06:06