번호	제목
19702	친구
19703	실험
19704	Best Place
19705	Roadside Advertisements
19706	Hotspot
19707	RMQ
19708	I want to be the very best too!
19709	LunchBox
19710	Fabric
19711	Rock Climbing
19712	Panda Ski
19713	UnluckyFloors
19718	King's Inspection
19719	Cash Gap
19720	Jet Trains
19721	Cutting pizza
19722	Unique Solution
19723	Metro 2345
19724	Weight Overflow
19725	Checking Answers to Test