1. History of submissions
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Pinnian Chen

@nian_feng

China, Changsha

Joined Jan 2024

World Rank: #31957 (0.8 points)

Institution: Changjun Middle School

Activity over the last year

Effectiveness

 Problems solved
12
 Solutions submitted
40

Problems

List of solved classical problems:

BUSINESS QTREE4
GSS1 QTREE5
GSS2 QTREE6
GSS3 SERVICE
GSS4 TTM
HISTOGRA
NAPTIME

TODO list of classical problems:

GSS5
LIGHTIN

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