function pirates(input) {
    let firstline = input.splice(0, input.indexOf("Sail"))
    let cities = {}
    let secondLine = input.splice(1, input.indexOf("End") - 1)
    firstline.forEach(element => {
        let [town, population, gold] = element.split("||")
        population = Number(population)
        gold = Number(gold)
        if (!cities.hasOwnProperty(town)) {
            cities[town] = { population, gold }
        } else {
            cities[town]["population"] += population
            cities[town]["gold"] += gold
        }
    });
    secondLine.forEach(element => {
        let [command, city, people, golds] = element.split("=>")
        people = Number(people)
        golds = Number(golds)

        switch (command) {
            case "Plunder":
                console.log(`${city} plundered! ${golds} gold stolen, ${people} citizens killed.`)
                if (cities.hasOwnProperty(city)) {
                    cities[city]["population"] -= people
                    cities[city]["gold"] -= golds
                }
                if (cities[city]["population"] == 0 || cities[city]["gold"] == 0) {
                    delete cities[city]
                    console.log(`${city} has been wiped off the map!`)
                }
                break;
            case "Prosper":
                let goldsLine = people
                // goldsLine = +goldsLine
                if (Number(goldsLine) < 0) {
                    console.log(`Gold added cannot be a negative number!`)
                } else {
                    cities[city]["gold"] += Number(goldsLine)
                    console.log(`${goldsLine} gold added to the city treasury. ${city} now has ${cities[city]["gold"]} gold.`)
                }
                break;

        }

    })
    let count = Object.keys(cities).length
    if (count > 0) {
        console.log(`Ahoy, Captain! There are ${count} wealthy settlements to go to:`)
        for (let keys in cities) {
            console.log(`${keys} -> Population: ${cities[keys]["population"]} citizens, Gold: ${cities[keys]["gold"]} kg`)
        }
    } else {
        console.log("Ahoy, Captain! All targets have been plundered and destroyed!")
    }
}