Cake

function cake(input) {
    let l = Number(input.shift());
    let w = Number(input.shift());

    let cake = l * w;

    let command = input.shift();

    let cakeSlise = 0;
    let counter = 0;

    while (cakeSlise <= cake) {

        if (command === 'STOP') {
            break;
        }
        let takeSlise = Number(command);


        cakeSlise += takeSlise;
        counter++;
        command = input.shift();
    }
    if (cakeSlise < cake) {
        let leftSlice = Math.abs(cake - cakeSlise);
        console.log(`${leftSlice} pieces are left.`);
    }
    else if (cakeSlise >= cake) {
        let left = Math.abs(cakeSlise - cake);
        console.log(`No more cake left! You need ${left} pieces more.`);
    }

}