object Main extends App {
	def f(s:String)=(for(i<-0 until s.length/2)yield s(i)-s(s.length-i-1)).sum==0
 
	println("True tests:")
	Array("1","6","11","141","1221","23281453796004414",
	"523428121656666655655556655656502809745249552466339089702361716477983610754966885128041975406005088"
	) foreach { s => if (!f(s)) println("Test failed") else println("Test passed!")}
 
	println("\nFalse tests:")
	Array("10","12","110","15421","5234095123508321",
	"6240911314399072459493765661191058613491863144152352262897351988250431140546660035648795316740212454"
	) foreach { s => if (f(s)) println("Test failed") else println("Test passed!")}
}

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