function solve(input) {
    let budget = +input.shift();
    let product = input.shift();
    let price = 0;
    let productsCounter = 0;
    let moneySpent = 0;
    let boughtProducts = 0;

    while (product !== 'Finish') {
        productsCounter++;
        if (product == 'Star') {
            price = 5.69;
        } else if (product == 'Angel') {
            price = 8.49;
        } else if (product == 'Lights') {
            price = 11.20;
        } else if (product == 'Wreath') {
            price = 15.50;
        } else if (product == 'Candle') {
            price = 3.59;
        }
        if (productsCounter % 3 == 0) {
            price = 0.7;
        }

        budget -= price;
        moneySpent += price;

        if (budget  price) {
            let diff = price - budget;
            console.log(`Not enough money! You need ${diff} lv more.`);
            break;
        }
        boughtProducts++;
        product = input.shift();
        if (product == 'Finish') {
            console.log(`Congratulations! You bought everything!`);
            break;
        }
    }

    console.log(`${boughtProducts} items - ${moneySpent.toFixed(2)} lv spent.`);
}