A City ---
B Black and White ???
C Dirichlet \(k\)-th root !!!
D Fire ???
E Flow !!!
F Game ???
G Happiness ???
H King !!!
I Moon ???
J Permutation ???
K All Pair Maximum Flow ???
L Travel ???
M Value +++
2019icpc ecfinal
原文：https://www.cnblogs.com/League-of-cryer/p/14191421.html
