Solve Problems
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Cloudy Days
ATTEMPTED BY: 748 SUCCESS RATE: 67% LEVEL: Easy
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Station Pairs
ATTEMPTED BY: 216 SUCCESS RATE: 38% LEVEL: Hard
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Reach Quickly
ATTEMPTED BY: 100 SUCCESS RATE: 40% LEVEL: Hard
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Vaccine
ATTEMPTED BY: 207 SUCCESS RATE: 88% LEVEL: Hard
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Flip Grid
ATTEMPTED BY: 135 SUCCESS RATE: 73% LEVEL: Medium
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Two gold mines
ATTEMPTED BY: 525 SUCCESS RATE: 88% LEVEL: Medium
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Tree construction
ATTEMPTED BY: 233 SUCCESS RATE: 78% LEVEL: Medium
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Handshakes in a party
ATTEMPTED BY: 202 SUCCESS RATE: 65% LEVEL: Medium
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The smallest subsequence
ATTEMPTED BY: 319 SUCCESS RATE: 63% LEVEL: Hard
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Meet people
ATTEMPTED BY: 241 SUCCESS RATE: 39% LEVEL: Hard