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fun main(args: Array<String>) {
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var number = 520L
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var square = 520 * 520L
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while (true) {
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val last6 = square.toString().takeLast(6)
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if (last6 == "269696") {
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println("The smallest number is $number whose square is $square")
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return
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}
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number += 2
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square = number * number
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}
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}
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