Problems #2010-TOI-pre

# Name
TopCoder AC Ratio (user) AC (submission)
1716 89.7% (175/195) 40.7% (228/560)
1717 96.7% (116/120) 53.5% (162/303)
1718 94.3% (99/105) 37.8% (154/407)
1719 51.1% (23/45) 12.8% (40/312)
1720 90.5% (67/74) 51.0% (98/192)