function gradiation(input) {
  let name = input.shift();
  let grade = 0;
  let summark = 0;

  while (grade <= 12) {
    let mark = Number(input.shift());
    grade++;
    summark += mark;
  }

  let averagemark = summark / grade;

  if (averagemark >= 4.0) {
    console.log(`${name} graduated. Average grade: ${averagemark.toFixed(2)}`);
  } else {
    console.log(
      `${name} not graduated. Average grade: ${averagemark.toFixed(2)}`
    );
  }
}