筱玛爱地理

2019-6-26

I have heared Inverse-modulo(逆元) before,I can't understand it clearly that time till I met this problem yesterday.

Floyd

2019-6-12

A man's best friends are his ten fingers.

Kruskal

2019-5-29

Who is confessing now, is confession not giving others the opportunity to refuse? If she is willing to go out with you, you will take her to the night and then hold her hand. If she is willing to hold hands with you, you will kiss her.