【例7.1】保留3位小数

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	mijunmin	7ms	536 KiB	C++11	131 Bytes	2024-3-24 10:05:28
AC	weilaicheng	7ms	540 KiB	C++11	155 Bytes	2024-3-24 9:48:58
AC	mixinyue	8ms	764 KiB	C++11	127 Bytes	2024-3-24 9:40:53
AC	zhengziqi	8ms	764 KiB	C++11	119 Bytes	2024-9-8 11:52:06
AC	mixinyue	8ms	536 KiB	C++11	132 Bytes	2024-3-24 9:41:06
AC	tongyizhen	8ms	548 KiB	C++11	131 Bytes	2024-3-24 9:49:20
AC	zhouzeyou	9ms	532 KiB	C++11	136 Bytes	2024-3-24 9:50:53
AC	manfen	9ms	768 KiB	C++11	140 Bytes	2024-10-6 9:23:00
AC	zhangyuanyuan	9ms	536 KiB	C++11	136 Bytes	2024-3-24 9:52:11
AC	yangjiakang	9ms	768 KiB	C++11	131 Bytes	2024-9-8 11:48:29
AC	zhengzihao	9ms	536 KiB	C++11	131 Bytes	2024-9-22 11:25:26
AC	weilaicheng	9ms	548 KiB	C++11	121 Bytes	2024-3-24 8:28:16
AC	weilaicheng	9ms	764 KiB	C++11	121 Bytes	2024-3-24 9:50:16
AC	赵淼森	9ms	764 KiB	C++11	132 Bytes	2024-3-24 9:41:11
AC	weilaicheng	9ms	756 KiB	C++11	141 Bytes	2024-3-24 9:50:47
AC	zhutianle	9ms	536 KiB	C++11	148 Bytes	2024-4-4 19:58:39
AC	weilaicheng	9ms	536 KiB	C++11	141 Bytes	2024-3-24 9:49:38
AC	weilaicheng	10ms	552 KiB	C++11	141 Bytes	2024-3-24 8:25:11
AC	xumingyuan	10ms	768 KiB	C++11	126 Bytes	2024-3-24 11:11:23