解题报告链接(开坑不解释)：
A Square Root 11.1% 4/36
B Shortest Subsequence 25.5% 25/98
C Draw a Circle to Curse You! 0.0% 0/0
D Packing chocolate 0.0% 0/0
E Weight loss plan 0.0% 0/0
F Crazy Biscuits 25.0% 24/96
G Academic Report in USTC 43.8% 7/16
H The World Of Dango 0.0% 0/4
分析：
B 串的问题 dp?
F 拓扑排序？差分约束？
