def main():
s = Sieve()
prime = 2
count = 1
while count < 10001:
prime = s.next_prime(prime)
count += 1
print(prime)
def main():
s = Sieve()
sum = 0
prime = 2
while prime < 2000000:
sum += prime
prime = s.next_prime(prime)
print(sum)
