DP？
by 流畅哥哥 @ 2014-11-02 20:14:29
排列组合 C（n+m，m)或C(n+m,n)
by lm987972683 @ 2014-11-02 21:36:34
$2^{10}$考古
by t162 @ 2019-02-19 10:12:21
$2^{10}$
考古
by aminoas @ 2019-05-18 12:01:22
$2^{10}$ 考古！
这里以后会布满考古者的足迹！
by Alex_Wei @ 2019-09-03 22:32:06
考古
by 救いの翼 @ 2019-09-13 20:37:10
考古
by team109 @ 2019-09-14 22:04:22
考古
by Y15BeTa @ 2019-10-12 19:31:25
考古
by xh39 @ 2019-11-04 16:34:37
I AK IOI!!!
by __gcd @ 2019-11-09 17:18:37