# TopCoder

Caido
$\text{W}ai\text{M}ai\sim$

100.0% (88/88)

66.7% (116/174)

10
20
2

# Sample Output

primes between 1 ~ 10: 2 3 5 7
primes between 1 ~ 20: 2 3 5 7 11 13 17 19
primes between 1 ~ 2: 2