function lift(arr) {

    let peopleWaiting = Number(arr.shift());
    let currState = arr.shift().split(' ').map(Number);
    let maxCapacity = 4;
    let filledLift = [];
    for (let i = 0; i < currState.length; i++) {
        let curr = currState[i];

        if (curr === 0 && peopleWaiting >= maxCapacity) {
            curr += maxCapacity;
            peopleWaiting -= maxCapacity;
            filledLift.push(curr);
        } else if (curr !== 0 && peopleWaiting >= maxCapacity) {
            let notEmpty = maxCapacity - curr;
            let filled = curr + notEmpty;
            peopleWaiting -= notEmpty;
            filledLift.push(filled);
        } else if (curr === 0 && peopleWaiting < maxCapacity || curr !== 0 && peopleWaiting < maxCapacity) {
            if (peopleWaiting === 0) {
                break;
            }
            curr += peopleWaiting;
            peopleWaiting -= curr;
            filledLift.push(curr);

        }
    }
    let elCount = 0;
    for (let el of filledLift) {
        elCount++
        if (el === maxCapacity && elCount === filledLift.length) {
            console.log(`There isn't enough space! ${peopleWaiting} people in a queue!`);
            console.log(filledLift.join(' '));
        } else if (peopleWaiting === 0 && elCount === filledLift.length) {
            console.log(`The lift has empty spots!`);
            console.log(filledLift.join(' '));
        } else if (peopleWaiting === 0 && el === maxCapacity && elCount === filledLift.length) {
            console.log(filledLift.join(' '));
        }
    }
}