统计偶数个数

状态	递交者	时间	内存	语言	代码	递交时间
AC	THS薛丞皓	11ms	548 KiB	C++14	255 Bytes	2026-8-17 15:36:37
AC	许铖晟	11ms	500 KiB	C++14	208 Bytes	2026-4-8 19:34:58
AC	UID 33	16ms	576 KiB	C++14	191 Bytes	2026-4-12 9:45:36
AC	UID 71	16ms	540 KiB	C++14	184 Bytes	2026-4-12 9:48:01
AC	liuxinyi	17ms	600 KiB	C++14	215 Bytes	2026-4-12 9:43:52
AC	UID 73	17ms	516 KiB	C++14	506 Bytes	2026-4-12 9:28:18