先挖坑，慢慢填
A.Add More Zero
题目就是要算(2^n)的位数，直接(lg(2^n)=n*lg2)即可，没有任何精度问题
B.Balala Power!
C.Colorful Tree
D.Division Game
E.Expectation Division
F.Function
G.Gear Up
H. Hints of sd0061
I.I Curse Myself
J.Journey with Knapsack
K.KazaQ's Socks
L.Limited Permutation