2018 ACM-ICPC China Shanghai Metropolitan Invitational

A. Monotonic Matrix

solved by CSL. 4:40(+5)

B. Perfect Numbers

solved by ybmj. 0:15(+)

C. Rescue

upsolved by CSL.

D. Thinking-Bear magic

solved by Moira. 0:32(+)

F. Color it

solved by ybmj. 2:06(+1)

H. A Simple Problem with Integers

upsolved by CSL.

I. Matrix Game

upsolved by CSL. (-2)

J. Beautiful Numbers

solved by CSL. 2:35(+)

K. Matrix Multiplication

solved by CSL. 0:06(+)