Practice: COINS, PRIME1, CHGIFT1, XORGRID, GENETICS, FURGRAPH, COVERING, BEAUTY, GEOCHEAT, HAMILG, CBAL, SEGMENTQ, CALLSCHE, STR_FUNC, SEINC, CHNBGMT, IMPROVE, REBXOR, SEZ, SEAINVS, FNCS, COT5, IOPC14L, KILLKTH, XYHUMOQ, CHEFKNN, HLD, MINIMAX
AUG16: CHCHCL
FEB17: CHEFAPAR, MAKETRI, KBIGNUMB, CHEFBEST, INTERVAL, CHEFYODA, DISTNUM3, MFREQ, GERMANDE
JUNE17: CLONEME, GOODSET, XENRANK, SUMQ, PRMQ, UNIONSET, NEO01, OAK, SBTR
MARCH18A: MIXCOLOR, XXOR, MINVOTE, PSHTRG, GCDCNT, CUTTREE
MAY18A: DBFB, FAKEBS, CHSIGN, STMINCUT, EDGEST, SERSUM, NONCONVX