Total cost:                123341
No. of recharges:               7
No. of vehicles:                2

Route  1: Cost        74524
    D1
    C9    C1    S2
    C2   C10   C11    S6
    S7
    C6   C14    S3
   C13    C5    D2

Route  2: Cost        48817
    D3
    C4   C12    S8
    C3    S9
   C15    C7   S10
   C16    C8    D4

