prucPruc

function solve(input) {

    let days = Number(input.shift());
    let foodQuantity = Number(input.shift());

    let eatenFoodByCat = 0;
    let eatenFoodByDoggo = 0;
    let totalFood = 0;
    let biscuits = 0;

    for (let i = 1; i <= days; i++) {
        let eatenFoodDoggo = Number(input.shift());
        let eatenFoodCat = Number(input.shift());
        if (i % 3 === 0) {
            biscuits += eatenFoodCat + eatenFoodDoggo;
            biscuits *= 0.10;
        }
        eatenFoodByDoggo += eatenFoodDoggo;
        eatenFoodByCat += eatenFoodCat;
        totalFood = + eatenFoodByCat + eatenFoodByDoggo;
    }
    let percentEatenFood = (totalFood * 1.0 * 100) / foodQuantity;
    let percentDog = (eatenFoodByDoggo * 1.0 * 100) / totalFood;
    let percentCat = (eatenFoodByCat * 1.0 * 100) / totalFood;

    console.log(`Total eaten biscuits: ${Math.round(biscuits)}gr.`);
    console.log(`${percentEatenFood.toFixed(2)}% of the food has been eaten.`);
    console.log(`${percentDog.toFixed(2)}% eaten from the dog.`);
    console.log(`${percentCat.toFixed(2)}% eaten from the cat.`);
}