object TwoBases { def test(x: Int, y: Int, z: Int) = (100*x + 10*y + z == math.pow(9,2)*z + 9*y + z) def main(args: Array[String]) { for(x <- 0 to 9; y <- 0 to 9; z <- 0 to 9) { if(test(x, y, z)){ println("%d%d%d".format(x, y, z)); } } } }