@touchwood

Netherlands

Joined Jun 2009

World Rank: #47533 (0.4 points)

Activity over the last year

Effectiveness

 Problems solved
13
 Solutions submitted
22

Problems

List of solved classical problems:

ARITH PALIN
BULK PIR
CMPLS PRIME1
CRYPTO2 SBSTR1
FCTRL TEST
FCTRL2 TETRA
ONP