function trainTheTrainers(input) {
  let trainers = input.shift();
  let problem = input.shift();

  let averageGrades = 0;
  let totalAverageGrades = 0;
  let counter = 0;

  while (problem !== "Finish") {
    let commadnCounter = 0;
    let sumGrades = 0;
    while (commadnCounter !== trainers) {
      commadnCounter++;
      command = input.shift();
      sumGrades += command;
    }

    counter++;
    averageGrades = sumGrades / commadnCounter;
    console.log(`${problem} - ${averageGrades.toFixed(2)}.`);
    problem = input.shift();
    totalAverageGrades += averageGrades;
  }

  console.log(
    `Student's final assessment is ${(totalAverageGrades / counter).toFixed(
      2
    )}.`
  );
}
trainTheTrainers([
  2,
  "Objects and Classes",
  5.77,
  4.23,
  "Dictionaries",
  4.62,
  5.02,
  "RegEx",
  2.88,
  3.42,
  "Finish"
]);