Solve Problems
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Empty arrays
ATTEMPTED BY: 1949 SUCCESS RATE: 68% LEVEL: Easy
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Holiday decorations
ATTEMPTED BY: 335 SUCCESS RATE: 85% LEVEL: Hard
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Disk tower
ATTEMPTED BY: 4421 SUCCESS RATE: 85% LEVEL: Easy
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Number Recovery
ATTEMPTED BY: 706 SUCCESS RATE: 58% LEVEL: Medium