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import Foundation
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let contents = try! String(contentsOfFile: "input.txt")
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var lines = [Int]()
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for l in contents.split(separator:"\n") {
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lines.append(Int(l)!)
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}
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var increases = 0
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for i in 1..<lines.count {
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if lines[i] > lines[i-1] {
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increases += 1
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}
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}
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print(increases)
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