2001-2002 ACM-ICPC Northeastern European Regional Contest (NEERC) A B C D -F 2009-2010 ACM-ICPC Northeastern European Regional Contest (NEERC 09) (Deprecated, without interactive problem C) B D H F 2002-2003 Winter Petrozavodsk Camp, Andrew Stankevich Contest 1 (ASC 1) A -C D E