【入门】统计直角、锐角、钝角的个数？

状态	递交者	时间	内存	语言	代码	递交时间
AC	shaojianle	1ms	364 KiB	C++98(O2)	350 Bytes	2026-4-30 17:25:18
AC	lijianan	1ms	592 KiB	C++98	298 Bytes	2026-4-24 13:40:45
AC	liangluoquan	1ms	504 KiB	C++14(O2)	220 Bytes	2026-4-23 17:54:54
AC	huangxiaoyu	1ms	776 KiB	C++98	539 Bytes	2026-4-23 16:48:54
AC	heqianmo	1ms	352 KiB	C++14	259 Bytes	2026-5-18 20:24:13
AC	zhongjunnan	1ms	516 KiB	C++11(O2)	297 Bytes	2026-5-11 13:32:29
AC	zhengkaiyang666	1ms	504 KiB	C++11(O2)	282 Bytes	2026-5-11 13:24:19
AC	yezihao	1ms	368 KiB	C++11(O2)	269 Bytes	2026-5-18 21:12:42
AC	taosirui	2ms	508 KiB	C++98(O2)	384 Bytes	2026-5-6 13:11:56
AC	zhangxin	5ms	516 KiB	C++14(O2)	378 Bytes	2026-4-8 13:08:35