Solve Problems
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Empty arrays
ATTEMPTED BY: 2540 SUCCESS RATE: 69% LEVEL: Easy
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Holiday decorations
ATTEMPTED BY: 543 SUCCESS RATE: 75% LEVEL: Hard
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Disk tower
ATTEMPTED BY: 5979 SUCCESS RATE: 87% LEVEL: Easy
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Number Recovery
ATTEMPTED BY: 1598 SUCCESS RATE: 65% LEVEL: Medium