function manOWar(arr) {
    let pirateShip = arr.shift().split('>').map(Number);
    let warShip = arr.shift().split('>').map(Number);
    let maximumHC = Number(arr.shift());

    arr.forEach(row => {
        let [command, ...args] = row.split(' ');
        if (command == 'Retire') {
            console.log(`Pirate ship status: ${pirateShip.reduce((a, b) => a + b, 0)}`);
            console.log(`Warship status: ${warShip.reduce((a, b) => a + b, 0)}`);
        } else if (command == 'Fire') fire(...args);
        else if (command == 'Defend') defend(...args);
        else if (command == 'Repair') repair(...args);
        else if (command == 'Status') console.log(`${pirateShip.filter(x => x < (maximumHC * 0.2)).length} sections need repair.`);
    })

    function fire(index, damage) {
        index = Number(index);
        damage = Number(damage);
        if (index < warShip.length && index > -1) {
            if (warShip[index] - damage > 0) warShip.splice(index, 1, warShip[index] - damage);
            else {
                warShip[index] = 0;
                console.log(`You won! The enemy ship has sunken.`);
            }
        }
    }

    function defend(startIndex, endIndex, damage) {
        startIndex = Number(startIndex);
        endIndex = Number(endIndex);
        if (startIndex < pirateShip.length && startIndex > -1 && endIndex < pirateShip.length && endIndex > -1) {
            for (let i = startIndex; i <= endIndex; i++) pirateShip[i] = Math.max((pirateShip[i] - Number(damage)), 0);
            let setted = Array.from(new Set(pirateShip)).filter(x => x > 0);
            if (setted.length == 0) console.log(`You lost! The pirate ship has sunken.`);
        }
    }

    function repair(index, health) {
        index = Number(index);
        if (index < pirateShip.length && index > -1) pirateShip[index] = Math.min((pirateShip[index] + Number(health)), maximumHC);
    }
}