// creates the data structure for the tree topology\r
Par = (bp *)umalloc(sizeof(bp));\r
STARTTIMER();\r
- bp_construct(Par, npar, (pb*) par, OPT_DEGREE|0);\r
+ bp_construct(Par, npar, (pb*) par, OPT_FAST_PREORDER_SELECT | OPT_DEGREE|0);\r
STOPTIMER(Building);\r
PRINTTIME("Building parenthesis struct", Building);\r
STARTTIMER();\r