1. History of submissions
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Sergei Fironov

@sergeif42

Russian Federation, Saint-Petersburg

Joined May 2016

World Rank: #128042 (0 points)

Activity over the last year

Effectiveness

 Problems solved
3
 Solutions submitted
36

Problems

List of solved classical problems:

ONP
PRIME1
TEST

TODO list of classical problems:

REPEATS

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