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

  for (let i = 1; i < period; i++) {
    patientsDaylyCounter = Number(input[i]);
    if (i % 3 === 0) {
      if (untreatenPatients > treatenPatients) {
        doctors++;
      }
    }
    if (patientsDaylyCounter  > doctors) {
      untreatenPatients += patientsDaylyCounter - doctors;
      treatenPatients += patientsDaylyCounter - untreatenPatients;
    } else {
      treatenPatients += doctors;
    }


  }
  console.log(`Treated patients: ${treatenPatients}.`);
  console.log(`Untreated patients: ${untreatenPatients}.`);
}