document.addEventListener("DOMContentLoaded", function() {
    function calculate() {
        const p = parseFloat(document.getElementById("p").value) / 100;
        const q = parseFloat(document.getElementById("q").value) / 100;
        const result = (1 - p * (1 - q) ** 2 - (1 - p) * q ** 2)*250;
        document.getElementById("result").textContent = Math.round(result);
    }

    document.querySelector("#calculateButton").addEventListener("click", calculate);
});