Problems from Southwestern Europe Regional Contest (SWERC) 2011

	Add	Remove

Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Distributing Ballot Boxes	0.01	181	2558	2117	83%	2.6Easy	en
Guess the Numbers	0.01	198	254	139	55%	7.4Hard	en
Non-negative Partial Sums	0.04	307	175	114	65%	6.5Hard	en
Remoteland	0.13	644	94	73	78%	5.6Hard	en