Party Profit

function party(args) {
    let companionsCount = +args[0];
    let totalCoins = 0;
    let days = +args[1];

    for (let i = 1; i <= +days; i++) {
        if (i % 10 === 0) {
            companionsCount -= 2;
        }
        if (i % 15 === 0) {
            companionsCount += 5;
        }
        totalCoins += (50 - (companionsCount * 2));

        if (i % 3 === 0) {
            totalCoins -= (companionsCount * 3);
        }
        if (i % 5 === 0) {
            totalCoins += (companionsCount * 20);
        }
        if (i % 3 === 0 && i % 5 === 0) {
            totalCoins -= (companionsCount * 2);
        }
    }

    let coins = Math.floor(totalCoins / companionsCount);
    console.log(`${+companionsCount} companions received ${+coins} coins each.`);
}