# TopCoder

\begin{align} AC \times 2^9 \\ \text{New TIOJ ?} \end{align}

100.0% (44/44)

60.4% (58/96)

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