@pgf2

Japan

Joined Nov 2011

World Rank: #83257 (0.1 points)

Activity over the last year

MayJuneJulyAugustSeptemberOctoberNovemberDecemberJanuaryFebruaryMarchAprilless than 10 submissionsbetween 10 and 20 submissionsbetween 20 and 30 submissionsbetween 30 and 40 submissionsmore than 40 submissions

Effectiveness

 Problems solved
9
 Solutions submitted
335

Problems