function solve(arr) {

    let peshoInventory = arr.shift().split(' ');
    for (let param of arr) {
        let currentElement = param.split(/[-\s+]/);
        let command = currentElement[0];

        let equipment = currentElement[1]; //.split("-")[0];
        let index = peshoInventory.indexOf(equipment);

        if (command === "Buy" && index === -1) {
            peshoInventory.push(equipment);
        } else if (command === "Trash" && index !== -1) {
            peshoInventory.splice(index, 1)
        } else if (command === "Repair" && index !== -1) {
            let forRepair = peshoInventory.splice(index, 1);
            peshoInventory.push(forRepair);
        } else if (command === "Upgrade" && index !== -1) {
            let expansion = equipment+':'+currentElement[2];
            peshoInventory.splice(index + 1, 0, expansion);
        }

    }
    console.log(peshoInventory.join(" "))
}