function problemOne(input) {
    let sizeOfSide = Number(input.shift());
    let sheets = Number(input.shift());
    let areaToCover = sizeOfSide * sizeOfSide * 6;
    let areaOfCurrentSheet = 0;
    let totalArea = 0;
    let countSheets = 0;
    let percentage = 0;
    for (let i = 0; i < input.length; i += 2) {
        areaOfCurrentSheet = input[i] * input[i + 1];
        countSheets++;
        if (countSheets % 3 === 0) {
            areaOfCurrentSheet = areaOfCurrentSheet * 0.75;
            totalArea += areaOfCurrentSheet;
        } else if (countSheets % 5 === 0) {
           totalArea += 0;
        } else {
            totalArea += areaOfCurrentSheet;
        }
    }
    if (totalArea >= areaToCover) {
        let paperLeft = totalArea - areaToCover;
        percentage = (paperLeft * 100) / totalArea;
        console.log("You've covered the gift box!");
        console.log(`${percentage.toFixed(2)}% wrap paper left.`);

    } else {
        percentage = ((totalArea * 100) / areaToCover);
        console.log('You are out of paper!');
        console.log(`${(100- percentage.toFixed(2))}% of the box is not covered.`);
    }

}

problemOne([2,
    2,
    0.2,
    7,
    6,
    8.5])