1. History of submissions
  2. (plaintext version)

Xudong Ma

@marvinnnn

China, Beijing

Joined Jul 2023

World Rank: #55991 (0.3 points)

Institution: None

Activity over the last year

Effectiveness

 Problems solved
6
 Solutions submitted
10

Problems

List of solved classical problems:

HISTOGRA
PHONELST
PT07Z
RMID
RMID2
SUDOKU

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