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	`1`	`+package p26xx`
	`2`	`+`
	`3`	`+import util.expect`
	`4`	`+`
	`5`	`+fun main() {`
	`6`	`+ class Solution {`
	`7`	`+ fun doesValidArrayExist(derived: IntArray): Boolean {`
	`8`	`+ return derived.fold(0, Int::xor) == 0`
	`9`	`+ }`
	`10`	`+ }`
	`11`	`+`
	`12`	`+ expect {`
	`13`	`+ Solution().doesValidArrayExist(`
	`14`	`+ intArrayOf()`
	`15`	`+ )`
	`16`	`+ }`
	`17`	`+}`

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