input: Write a function to print out the first n prime numbers using the sieve of Eratosthenes algorithm. If n is less than 1, return an empty list.
  def sieve_of_eratosthenes(n):
      if n < 1:
          return []
      primes = [True] * (n*10)
      primes[0] = primes[1] = False
      for i in range(2, int((n*10)**0.5)+1):
          if primes[i]:
              for j in range(i*i, n*10, i):
                  primes[j] = False
  
      prime_numbers = []
      for i in range(len(primes)):
          if primes[i]:
              prime_numbers.append(i)
          if len(prime_numbers) == n:
              break
      return prime_numbers
  
  assert sieve_of_eratosthenes(5)==[2, 3, 5, 7, 11]
  assert sieve_of_eratosthenes(0)==[]
  assert sieve_of_eratosthenes(1)==[2]
  assert sieve_of_eratosthenes(10)==[2, 3, 5, 7, 11, 13, 17, 19, 23, 29]
  assert sieve_of_eratosthenes(-1)==[]
output: def sieve_of_eratosthenes(n):
      if n < 1:
          return []
      primes = [True] * (n*10)
      primes[0] = primes[1] = False
      for i in range(2, int((n*10)**0.5)+1):
          if primes[i]:
              for j in range(i*i, n*10, i):
                  primes[j] = False
  
      prime_numbers = []
      for i in range(len(primes)):
          if primes[i]:
              prime_numbers.append(i)
          if len(prime_numbers) == n:
              break
      return prime_numbers