cake

function cake(input) {
    let height = Number(input.shift());
    let width = Number(input.shift());
    let cakeSize = height * width;
    let neededPieces = 0;
    while (neededPieces <= cakeSize) {

        let pieces = input.shift();

        if (pieces != "STOP") {
            neededPieces += Number(pieces);

        } else {
            console.log(`${cakeSize - neededPieces} pieces are left.`);
            break;
        }
    }
    if (neededPieces >= cakeSize) {
        console.log(`No more cake left! You need ${neededPieces - cakeSize} pieces more.`);
    }
}