Arjen Kopinga

@cfern

Netherlands

Joined Nov 2010

World Rank: #25703 (1.1 points)

Activity over the last year

Effectiveness

 Problems solved
13
 Solutions submitted
51

Problems

List of solved classical problems:

EDIST NHAY
EIGHTS ONP
FAKETSP PRIME1
FCTRL2 QUADAREA
JULKA SAMER08F
LASTDIG TEST
MARBLES

TODO list of classical problems:

COMDIV SUMITR
SQFREE