fun Ġpeople ( bus Stops : ĠArray < Pair < Int , ĠInt >> ): ĠInt Ġ= Ġbus Stops . sum By Ġ{ Ġit . first Ġ} Ġ- Ġbus Stops . sum By Ġ{ Ġit . second Ġ} Ċ Ċ // Ġfun Ġpeople ( bus Stops : ĠArray < Pair < Int , ĠInt >>) Ġ= Ġbus Stops . sum By Ġ{ Ġit . first Ġ- Ġit . second Ġ} Ċ