renovation.js

function renovation(input) {
    let index = 0;
    let wallHeight = Number(input[index]);
    index++;
    let wallWidth = Number(input[index]);
    index++;
    let skippedSurface = Number(input[index]);
    index++;
    let command = input[index];
    index++;
    let totalSurface = wallHeight * wallWidth * 4;
    let paintedSurface = Math.ceil(totalSurface - (totalSurface * (skippedSurface / 100)));
    let wallsPainted = false;

    while (command !== "Tired!") {
        let paintLitres = Number(command);

        if (paintedSurface - paintLitres < 0) {
            wallsPainted = true;
            console.log(`All walls are painted and you have ${paintLitres - paintedSurface} l paint left!`);
            break;
        } else if (paintedSurface - paintLitres === 0) {
            wallsPainted = true;
            console.log(`All walls are painted! Great job, Pesho!`);
            break;
        } else {
            paintedSurface -= paintLitres;
        }

        command = input[index];
        index++;
    }

    if (!wallsPainted) {
        console.log(`${paintedSurface} quadratic m left.`);
    }
}

renovation(["3", "5", "10", "2", "3", "4", "Tired!"]);
renovation(["2", "3", "25", "6", "7", "8"]);