Practice: PPTREE, MLCHEF, FRBSUM, CROCDILE
LTIME47: SEGM01, DIGVIRUS, BEARSEG, CLOSESTQ
COOK82: COOK82A, COOK82B, COOK82C, COOK82E, COOK82D
LTIME48: PREFINVS
LTIME49: TWONMS, MAXSEGM, SHDWCMP, COMPCLUB
COOK84: CHNGFUNC, CHNGOR, CHNGSUM, BIPARTRE, CHNGSEQ
SNCKQL21: LUCKYNUM
SNCK1B21: QPLACE