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There are 12 cars in this train
The data for each car are :

 Car number : 45301
      Cargo : coal
     Origin : Pittsburgh
Destination : Baltimore
     Weight : 13000 pounds
   Distance : 229 miles
       Cost : $ 433.15

 Car number : 57321
      Cargo : cattle
     Origin : Lancaster
Destination : Trenton
     Weight : 5000 pounds
   Distance : 198 miles
       Cost : $ 259.88

 Car number : 82353
      Cargo : hogs
     Origin : York
Destination : Trenton
     Weight : 3500 pounds
   Distance : 181 miles
       Cost : $ 199.87

 Car number : 77443
      Cargo : eggs
     Origin : Lancaster
Destination : Charlotte
     Weight : 1500 pounds
   Distance : 481 miles
       Cost : $ 273.81

 Car number : 39115
      Cargo : coal
     Origin : Pittsburgh
Destination : Norfolk
     Weight : 13500 pounds
   Distance : 451 miles
       Cost : $ 885.88

 Car number : 27145
      Cargo : coal
     Origin : Pittsburgh
Destination : Norfolk
     Weight : 13700 pounds
   Distance : 451 miles
       Cost : $ 899.00

 Car number : 81123
      Cargo : autos
     Origin : Detroit
Destination : Baltimore
     Weight : 27000 pounds
   Distance : 477 miles
       Cost : $ 1062.52

 Car number : 32492
      Cargo : hogs
     Origin : Lancaster
Destination : Trenton
     Weight : 3750 pounds
   Distance : 198 miles
       Cost : $ 234.26

 Car number : 65230
      Cargo : eggs
     Origin : Lancaster
Destination : Newark
     Weight : 1600 pounds
   Distance : 245 miles
       Cost : $ 148.76

 Car number : 37220
      Cargo : coal
     Origin : Pittsburgh
Destination : Roanoke
     Weight : 13600 pounds
   Distance : 495 miles
       Cost : $ 979.51

 Car number : 72413
      Cargo : autos
     Origin : Detroit
Destination : Trenton
     Weight : 26500 pounds
   Distance : 610 miles
       Cost : $ 1333.61

 Car number : 49374
      Cargo : autos
     Origin : Detroit
Destination : Charlotte
     Weight : 27300 pounds
   Distance : 893 miles
       Cost : $ 2011.26

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Number of Cars :       12
  Total weight :       74.97 tons
    Total cost : $   8721.50

  -------------  -------------  -------------  -------------  -------------
  | 45301     |  | 57321     |  | 82353     |  | 77443     |  | 39115     |
<-| coal      |<-| cattle    |<-| hogs      |<-| eggs      |<-| coal      |
  | Baltimore |  | Trenton   |  | Trenton   |  | Charlotte |  | Norfolk   |
  --O-------O--  --O-------O--  --O-------O--  --O-------O--  --O-------O--

  -------------  -------------  -------------  -------------  -------------
  | 27145     |  | 81123     |  | 32492     |  | 65230     |  | 37220     |
<-| coal      |<-| autos     |<-| hogs      |<-| eggs      |<-| coal      |
  | Norfolk   |  | Baltimore |  | Trenton   |  | Newark    |  | Roanoke   |
  --O-------O--  --O-------O--  --O-------O--  --O-------O--  --O-------O--

  -------------  -------------
  | 72413     |  | 49374     |
<-| autos     |<-| autos     |
  | Trenton   |  | Charlotte |
  --O-------O--  --O-------O--