1. History of submissions
  2. (plaintext version)

qian dichen

@nathen

China

Joined May 2010

World Rank: #79750 (0.1 points)

Activity over the last year

Effectiveness

 Problems solved
4
 Solutions submitted
13

Problems

List of solved classical problems:

ARITH
PRIME1
SBSTR1
TEST

TODO list of classical problems:

ONP
PALIN

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