Problem Site : http://www.jungol.co.kr
Problem 1. Line up (easy)
Problem 2. Calendar
Problem 3. Prime Number 369
Problem 4. Browser ( Stack )
Problem 5. Sort 3 number. (index)
Problem 6. Word matching (permutation)
Problem 7. Error Correction (Parity test)
Problem 8. Mass
Problem 9. Sumsets (Recursive)
Problem 10. Line drawing
Problem 11. Timeline (Fail...)