Question 1: 
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UNKNOWN1 = util 

UNKNOWN2 = Zurich

UNKNOWN3 = add

UNKNOWN4 = Chur

UNKNOWN5 = add

UNKNOWN6 = St. Morit

UNKNOWN7 = add

UNKNOWN8 = Pontresina

UNKNOWN9 = add

UNKNOWN10 = v1

UNKNOWN11 = 9

UNKNOWN12 = 17

UNKNOWN13 = ClassGraph

UNKNOWN14 = buildClassGraph

UNKNOWN15 = TraversalGraph

UNKNOWN16 = TraversalGraph

UNKNOWN17 = a

UNKNOWN18 = Itinerary

UNKNOWN19 = printItinerary

UNKNOWN20 = allLocations

UNKNOWN21 = util

UNKNOWN22 = TraversalGraph

UNKNOWN23 = Visitor

UNKNOWN24 = Trip

UNKNOWN25 = Location

UNKNOWN26 = Trip

UNKNOWN27 = String

UNKNOWN28 = Vector

UNKNOWN29 = arrival

UNKNOWN30 = int extends java.lang.Object

UNKNOWN31 = String

UNKNOWN32 = java.lang.Object

UNKNOWN33 = Vector

UNKNOWN34 = Location

UNKNOWN35 = Itinerary

UNKNOWN36 =  DONE

Question 2: 
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UNKNOWN1 = util 

UNKNOWN2 = F

UNKNOWN3 = F

UNKNOWN4 = util

UNKNOWN5 = D

UNKNOWN6 = X

UNKNOWN7 = MyVisitor

UNKNOWN8 = from A to F

UNKNOWN9 = A

UNKNOWN10 = B

UNKNOWN11 = D

UNKNOWN12 = E

UNKNOWN13 = F

UNKNOWN14 = A

UNKNOWN15 = B

UNKNOWN16 = D

UNKNOWN17 = E

UNKNOWN18 = F

UNKNOWN19 = D

UNKNOWN20 = x

UNKNOWN21 = X

UNKNOWN22 = A

UNKNOWN23 = b

UNKNOWN24 = B

UNKNOWN25 = B

UNKNOWN26 = d

UNKNOWN27 = D

UNKNOWN28 = D

UNKNOWN29 = e

UNKNOWN30 = E

UNKNOWN31 = E

UNKNOWN32 = f

UNKNOWN33 = F

UNKNOWN34 = 4

UNKNOWN35 = from A through X to F