Problems #2008-TOI-pre

# Name
TopCoder AC Ratio (user) AC (submission)
1506 92.4% (171/185) 35.2% (236/671)
1507 92.0% (81/88) 51.2% (109/213)
1508 98.4% (185/188) 54.5% (336/616)
1509 92.3% (144/156) 37.4% (390/1043)
1510 83.3% (40/48) 17.7% (55/311)