function solve (arr) {


    let pirShipStatus = arr[0].split('>').map(Number);

    let warShipStatus = arr[1].split('>').map(Number);

    let maxHealth = Number(arr[2]);

    arr.splice(0, 3);


    let indexWhile = 0;

    // console.log(arr);



        while (arr[indexWhile] !== 'Retire') {




            let currentCommand = arr[indexWhile].split(' ');


            if (currentCommand[0] === 'Fire') {

                let index = currentCommand[1];

                let damage = currentCommand[2];

                if (Number(index) in warShipStatus) {

                    warShipStatus[index] -= Number(damage);

                    if (warShipStatus[index] <= 0) {

                      return  `You won! The enemy ship has sunken.`;

                    }


                }


            } else if (currentCommand[0] === 'Defend') {

                let startIndex = currentCommand[1];

                let endIndex = currentCommand[2];

                let damage = currentCommand[3];


                if (Number(startIndex) in pirShipStatus && Number(endIndex) in pirShipStatus) {


                for (let i = startIndex; i <= endIndex; i++) {

                    pirShipStatus[i] -= Number(damage);

                    if (pirShipStatus[i] <= 0) {

                        return `You lost! The pirate ship has sunken.`;

                    }

                }




            }



            } else if (currentCommand[0] === 'Repair') {

                let index = currentCommand[1];

                let health = Number(currentCommand[2]);


                if (Number(index) in pirShipStatus) {


                    pirShipStatus[index] += health;

                    if (pirShipStatus[index] > maxHealth) {

                        pirShipStatus[index] = maxHealth;

                    }


                }


            } else if (currentCommand[0] === 'Status') {

                let twentyPercent = maxHealth * 0.2;

                let countOfSections = 0;

                pirShipStatus.forEach(par => par < twentyPercent ? countOfSections += 1 : false);


                console.log(`${countOfSections} sections need repair.`);


            }

            indexWhile++;

        }


        let pirateShipSum = 0;

        let warShipSum = 0;


        pirShipStatus.map(par => pirateShipSum += par);

        warShipStatus.map(par => warShipSum += par);


        console.log(`Pirate ship status: ${pirateShipSum}`);

        console.log(`Warship status: ${warShipSum}`);




  }