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East Central North America Regional

Contests

Contest# ProblemsAvailable
1998 East Central Regional Contest
 /ecna199811
/ecna199955
/ecna20001212
/ecna20011111
/ecna200299
/ecna200399
/ecna200488
/ecna200588
/ecna200688
/ecna200788
/ecna200888
/ecna200988
/ecna201088
/ecna201199
/ecna201299
/ecna20131212
/ecna20141212
/ecna20151313
/ecna20161414
/ecna20171616
/ecna20181616
/ecna20191717
/ecna20201212
/ecna20211313
/ecna20221212
/ecna20231212
/ecna20241313