SAME SHIT

 function solve(input) {

    let towns = {};
    let data = [];
    let arr = [];
    let isLanded = false;
    for (let line of input) {
        let planeId = line.split(' ')[0];
        let town = line.split(' ')[1];
        let passengersCount = Number(line.split(' ')[2]);
        let action = line.split(' ')[3];


        if (!towns[town] && action == 'land') {
            data.push(planeId);
            isLanded = true;
        }
        if (action == 'depart') {
            isLanded = false;
        }

        if (!towns[town]) {
            towns[town] = {
                arrivals: 0,
                departures: 0,
                planesData: [],
                isLanded: isLanded
            };
        }

        if (action == 'land') {
            towns[town].arrivals += passengersCount
        }
        else {
            towns[town].departures += passengersCount
        }
        if (action == 'land') {

        }
        towns[town].planesData.push(planeId);

        arr.push()
    }

    data.sort((a, b) => {
        return a[0].localeCompare(b[0])
    });




    console.log(`Planes left:`);
    for (let town of data) {
        console.log(`- ${town}`);
    }

    // console.log(towns);
    //  for (let key of data) {
    //       // Object.keys(data[key].arrivals).sort(function(a,b){return key[a]-key[b]})
    //      console.log(key);
    //  }
     // console.log(data);


    for (let line in towns) {
        if (towns[line].isLanded == true) {
            console.log(`${line}`);
            console.log(`Arrivals: ${towns[line].arrivals}`);
            console.log(`Departures: ${towns[line].departures}`);
            console.log("Planes:");
            console.log(`-- ${towns[line].planesData.join('\n-- ')}`);
        }
    }


}
solve(
    [
        "Boeing474 Madrid 300 land",
        "AirForceOne WashingtonDC 178 land",
        "Airbus London 265 depart",
        "ATR72 WashingtonDC 272 land",
        "ATR72 Madrid 135 depart"
    ]);