Good! 122 posts in total. Keep on posting.

Kanade's trio

06-23

Kanade's sum

06-23

Kanade's convolution

06-22

RXD and math

06-22

RXD's date

06-22

树状数组套权值线段数

06-22

String and String

06-22

If the starlight never fade

06-21

Regular polygon

06-21

TrickGCD

06-21