Practice: FIBTREE
MAY18B: RD19, XORAGN, MTYFRI, DBFB, CHSIGN, FAKEBS, STMINCUT, EDGEST, NONCONVX
NOV18B: CHFTIRED, CHHAPPY, PRDRG, HMAPPY1, BINSTR, MAGICHF2, GMEDIAN, PRITREE
JAN19A: DPAIRS, DIFNEIGH, EARTSEQ, PARRTY, XYPIZQ, GRAPART, MXDIST, MATCHIT
JUNE19A: SUMAGCD, CHFING, LENTMO, COUNTIT, INTRPATH, FGTREE, COOLCHEF, SNCK99