Problems from Southwestern Europe Regional Contest (SWERC) 2011

	Add	Remove

Name	Fastest	Shortest	Total	Acc.	Ratio	Difficulty	Languages
Distributing Ballot Boxes	0.04	192	11394	3009	26%	3.8Medium	en
Guess the Numbers	0.01	357	881	203	23%	7.9Hard	en
Non-negative Partial Sums	0.04	420	561	159	28%	6.8Hard	en
Remoteland	0.18	644	220	99	45%	5.0Medium	en