@mrain

China

Joined May 2009

World Rank: #8423 (4.2 points)

Activity over the last year

Effectiveness

 Problems solved
7
 Solutions submitted
30

Problems

List of solved classical problems:

DISUBSTR
OTOCI
PC8C
REPAIR1
SAMER08I
SUBST1
SUDOKU2

TODO list of classical problems:

CRYPTO6
QTREE