1. History of submissions
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Hanwen Dong

@donghanwen

China, Qingdao

Joined Jan 2022

World Rank: #20773 (1.5 points)

Institution: Qingdao No.2 Middle School of Shandong Province

Activity over the last year

Effectiveness

 Problems solved
12
 Solutions submitted
52

Problems

List of solved classical problems:

GSS1 MSKYCODE
GSS3 PRIMES2
GSS4 RUNAWAY
GSS6 SERVICE
GSS7 SUBST1
KPRIMES2
MOD

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