Solve Problems
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Cloudy Days
ATTEMPTED BY: 563 SUCCESS RATE: 65% LEVEL: Easy
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Station Pairs
ATTEMPTED BY: 175 SUCCESS RATE: 37% LEVEL: Hard
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Reach Quickly
ATTEMPTED BY: 80 SUCCESS RATE: 37% LEVEL: Hard
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Vaccine
ATTEMPTED BY: 174 SUCCESS RATE: 87% 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: 482 SUCCESS RATE: 88% LEVEL: Medium
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Tree construction
ATTEMPTED BY: 222 SUCCESS RATE: 79% LEVEL: Medium
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Handshakes in a party
ATTEMPTED BY: 183 SUCCESS RATE: 63% LEVEL: Medium
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The smallest subsequence
ATTEMPTED BY: 310 SUCCESS RATE: 63% LEVEL: Hard
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Meet people
ATTEMPTED BY: 227 SUCCESS RATE: 40% LEVEL: Hard