Solve Problems
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Cloudy Days
ATTEMPTED BY: 435 SUCCESS RATE: 67% LEVEL: Easy
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Station Pairs
ATTEMPTED BY: 168 SUCCESS RATE: 37% LEVEL: Hard
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Reach Quickly
ATTEMPTED BY: 72 SUCCESS RATE: 38% LEVEL: Hard
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Vaccine
ATTEMPTED BY: 147 SUCCESS RATE: 90% LEVEL: Hard
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Flip Grid
ATTEMPTED BY: 98 SUCCESS RATE: 74% LEVEL: Medium
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Two gold mines
ATTEMPTED BY: 464 SUCCESS RATE: 88% LEVEL: Medium
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Tree construction
ATTEMPTED BY: 214 SUCCESS RATE: 79% LEVEL: Medium
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Handshakes in a party
ATTEMPTED BY: 173 SUCCESS RATE: 62% LEVEL: Medium
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The smallest subsequence
ATTEMPTED BY: 299 SUCCESS RATE: 64% LEVEL: Hard
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Meet people
ATTEMPTED BY: 212 SUCCESS RATE: 40% LEVEL: Hard