1. History of submissions
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Demin Zhang

@andrewzdm

China, Hefei

Joined Aug 2021

World Rank: #66759 (0.2 points)

Institution: Hefei No.1 High School

Activity over the last year

Effectiveness

 Problems solved
7
 Solutions submitted
17

Problems

List of solved classical problems:

FAVDICE
FREQUENT
GSS1
GSS3
GSS4
SUDOKU
SUMFOUR

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