2018_multi

A.Character Encoding

Solved by ghk.1:06(+)

• 容斥一下。

B.Pizza Hub

Upsolved by ghk.

• 比赛时写错一个变量，而且代码极长。

D.Parentheses Matrix

Solved by jjm.3:59(+)

• 构造。

E.Magic Square

Solved by ghk.0:18(+)

J.Taotao Picks Apples

Solved by ghk.1:51(+1)

• 二分+ST确定后面第一个大于它的数字，预处理前缀后缀。