1. History of submissions
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@yinshejian

China

Joined Jul 2009

World Rank: #63421 (0.2 points)

Activity over the last year

Effectiveness

 Problems solved
4
 Solutions submitted
21

Problems

List of solved classical problems:

CMEXPR
ONP
OTOCI
TEST

TODO list of classical problems:

FCTRL PALIN SBSTR1
IOIPALIN PRIME1 SCYPHER

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