melnicek.github.io/ctfpoints.html at master · melnicek/melnicek.github.io · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>ctfpoints</title>
</head>
<body>
    <p><input id="weight" type="text"placeholder="weight"></p>
    <p><input id="total_teams" type="text" placeholder="total_teams">/<input id="best_points" type="text" placeholder="best_points"></p>
    <p><input id="team_place" type="text"placeholder="team_place">/<input id="team_points" type="text"placeholder="team_points"></p>
    <button onclick="calculate()">Calculate</button>
    <hr>
    <p>CTFTime points: <b id="points"></b></p>
    <script>
    function calculate() {
      const weight = document.getElementById("weight").value;
      const total_teams = document.getElementById("total_teams").value;
      const best_points = document.getElementById("best_points").value;
      const team_place = document.getElementById("team_place").value;
      const team_points = document.getElementById("team_points").value;

      const points_coef = team_points / best_points;
      const place_coef = 1/team_place;
      const rating = ((points_coef + place_coef) * weight)/(1/(1+(team_place/total_teams)));
      document.getElementById("points").innerHTML = rating;
    }
    </script>
</body>
</html>