2020 CCPC Changchun Onsite

Problem A

Solved by (1/16)

Problem B

Unsolved.

Problem C

Unsolved.

Problem D

Solved by (1/36)

Problem E

Unsolved.

Problem F

Solved by (4/95)

Problem G

Unsolved.

Problem H

Unsolved.

Problem I

Unsolved.

Problem J

Solved by (1/145)

Problem K

Solved by (6/257)

Problem L

Unsolved.(-22)