Practice: MAXDIFF, CHEFST, NOKIA, EXTRAN, ALTARAY, PRIME1, NUMGAME2, RIGHTRI, RESQ, PCYCLE, XORSUB, GRANAMA, SALARY, SUMPAIR, CHCOINSG, SEACO, TOTR, CPLAY, GIT01, CHEFHAM, VK18, ANUMLA, OPC1703, BTAR, FBMT, CHEFEXQ, CARRAY, TRACE, SBSTR, PLUS, AMR15D, GRAPHAND, ICL1902, ICL1901, ICL1905, ICL1906, KLPM, HMAPPY1, HMAPPY, SURCHESS, SLIS, ATTND, FASTFOOD, MINARRS, FAPF, ADASCOOL, ADAKNG, PAJAPONG, SILLYPRS, DPERM, CCIRCLES, PAIRCLST, TAQTREE, BDGFT, FUZZYLIN, AOPN, ENCODING, CHEFDIL, WORKCHEF, MAXOR, IITI15, GERALD07, PRCS16D, REBXOR, MIXGA, GUZAC, CARR, INVZCNT, PAIRSUM2, TREEVERS, SERIES, CJQK04, BPAIRS, HCODE03, XORGM, LGST, MAKEOR, BEEANCES, XORARY, ANCESTOR, ECODOWN, MONSTER, MVAL, PATHSUMS, DIANE, XOXO, INQU2000, INQU2003, REPLESX, DDIMMST
SEPT17: MINPERM, CHEFSUM, CHEFPDIG
ACJQ2017: ATMOQ1
JAN18: KCON, MAXSC, RECTANGL, PRTITION, STRMRG
MARCH18B: XXOR, MINVOTE, MINEAT, MIXCOLOR, BIGSALE, CHEGLOVE, PSHTRG
ZCOPRAC: ZCO14002
APRIL19B: MAXREM, STRCH, FENCE, SUBREM, SJ1
JUNE19B: LENTMO, SUMAGCD, CHFING, RSIGNS, KS2, PROXYC
SEPT19B: FIBEASY, CHEFINSQ, GDSUB, CHEFK1, DOOFST, LAPD
HOCO2020: HCODE01
FFC32020: FFC320C, FFC320D, FFC320B, FFC320E
STRT2020: LUCKYNO, PRIMEBIT, BOXINBOX, CRWDCN
CCOD2020: NITGOC