David Schafer's 徽章
Cody 徽章
全部
Commenter 29 Jul 2015Comment on a problem or solution
Awarded to David Schafer on 29 Jul 2015
Solver 29 Jul 2015Solve a problem for the first time
Awarded to David Schafer on 29 Jul 2015
CUP Challenge Master 07 Jan 2016Solve all the problems in CUP Challenge
Awarded to David Schafer on 07 Jan 2016
Cody 徽章
全部Commenter 29 Jul 2015Solver 29 Jul 2015CUP Challenge Master 07 Jan 2016
Comment on a problem or solution
Awarded to David Schafer on 29 Jul 2015
Solve a problem for the first time
Awarded to David Schafer on 29 Jul 2015
Solve all the problems in CUP Challenge
Awarded to David Schafer on 07 Jan 2016
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