YSITD_TG_Bot => #ysitd: <rextw>: 翻轉矩陣是啥 1 0 0 1 -> 0 1 1 0? #59a39da8bf862b60ba42da91

YSITD_TG_Bot says to #ysitd

<rextw>: 翻轉矩陣是啥 1 0 0 1 -> 0 1 1 0?

at Mon, Aug 28, 2017 12:35 PM