function hospital(input) {
  let period = Number(input[0]);
  let doctors = 7;
  let day3check = 1;
  let treatenPatients = 0;
  let untreatenPatients = 0;

  for (let i = 1; i < input.length; i++) {
    i = Number(input[i]);
    if (i <= doctors) {
      treatenPatients += doctors;
    } else {
      untreatenPatients += i - doctors;
    }
    if (day3check % 3 === 0) {
      if (untreatenPatients > treatenPatients) {
        doctors++;
      }
    }
    day3check++;
  }
  console.log(`Treated patients: ${treatenPatients}`);
  console.log(`Untreated patients: ${untreatenPatients}`);
}

hospital(["4", "7", "27", "9", "1"]);