【例4.2】天安门广场的面积

状态	递交者	时间	内存	语言	代码	递交时间
AC	u2604	3ms	512 KiB	C++11	110 Bytes	2026-4-2 9:11:12
AC	u2610	3ms	512 KiB	C++98	96 Bytes	2026-4-13 20:50:53
AC	u2605	3ms	512 KiB	C++98	78 Bytes	2026-4-3 22:15:52
AC	u2608	3ms	516 KiB	C++98	93 Bytes	2026-4-11 8:38:23
AC	u2602	3ms	512 KiB	C++11	74 Bytes	2026-4-2 12:22:57
AC	u2611	3ms	512 KiB	C++98	73 Bytes	2026-4-18 10:13:40
AC	u2617	3ms	512 KiB	C++14	94 Bytes	2026-4-8 22:04:04
AC	u2616	3ms	512 KiB	C++98	121 Bytes	2026-4-9 21:51:51
AC	u2609	3ms	512 KiB	C++98(O2)	121 Bytes	2026-4-25 9:36:00
AC	u2603	3ms	512 KiB	C++98	74 Bytes	2026-4-3 18:50:18
AC	u2606	3ms	512 KiB	C++98	87 Bytes	2026-4-1 23:12:02
AC	u2607	3ms	524 KiB	C++98	79 Bytes	2026-4-6 8:53:19