Problems #2010-TOI-pre

# Name
TopCoder AC Ratio (user) AC (submission)
1716 90.2% (174/193) 40.8% (227/557)
1717 96.7% (116/120) 53.5% (162/303)
1718 94.2% (98/104) 38.7% (153/395)
1719 50.0% (23/46) 13.1% (40/305)
1720 90.3% (65/72) 50.5% (96/190)