food for pets

function foodForPets(input) {
    let index = 0;
    let days = Number(input[index]);
    index++;
    let foodQuantity = Number(input[index]);
    index++;
    let dogQuantity = Number(input[index]);
    index++;
    let catQuantity = Number(input[index]);
    index++;
    let currentDay = 1;
    let dogFood = 0;
    let catFood = 0;
    let biscuits = 0;

    while(currentDay <= days) {
        if(currentDay % 3 == 0) {
            biscuits += (dogQuantity + catQuantity) * 0.1;
        }
        dogFood += dogQuantity;
        catFood += catQuantity;
        dogQuantity = input[index];
        index++;
        catQuantity = input[index];
        index++;
        currentDay++;
    }

    let totalFood = dogFood + catFood;
    let dogPercent = ((dogFood / totalFood) * 100).toFixed(2);
    let catPercent = ((catFood / totalFood) * 100).toFixed(2);
    let totalPercent = ((totalFood / foodQuantity) * 100).toFixed(2);
    console.log(`Total eaten biscuits: ${(Math.round)(biscuits)}gr.`);
    console.log(`${totalPercent}% of the food has been eaten.`);
    console.log(`${dogPercent}% eaten from the dog.`);
    console.log(`${catPercent}% eaten from the cat.`);
}