Cat Shelter

function catShelter(input) {

    let food = Number(input.shift()) * 1000;
    let command = input.shift();

    while (command !== "Adopted") {
        food -= Number(command);
        command = input.shift();
    }

    if (food >= 0) {
        console.log(`Food is enough! Leftovers: ${food} grams.`);
    } else {
        console.log(`Food is not enough. You need ${Math.abs(food)} grams more.`);
    }
}