class Heap0(val l0: US0, val l1: Int)
sealed interface US0 { val tag: Int }
class US0_None : US0 { override val tag: Int = 0 }
data class US0_Some(val f0: Int) : US0 { override val tag: Int = 1 }
fun spiral_main(): Int {
    var v0: Int = 0
    v0 = 3
    var v1: Int = 0
    v1 = 4
    var v2: US0 = US0_None()
    v2 = US0_Some(v0)
    var v3: Heap0 = Heap0(US0_None(), 0)
    v3 = Heap0(v2, v1)
    var v4: US0 = US0_None()
    var v5: Int = 0
    v4 = v3.l0
    v5 = v3.l1
    when (v4.tag) {
        0 -> {
            return 1
        }
        1 -> {
            var v6: Int = (v4 as US0_Some).f0
            var v7: Int = 0
            v7 = (v6 + v5)
            var v8: Boolean = false
            v8 = (v7 == 7)
            if (v8) {
                return 0
            } else {
                return 1
            }
        }
        else -> throw RuntimeException()
    }
}
fun main() {
    var spiral_exit_code = 0
    val spiral_thread = Thread(null, { spiral_exit_code = spiral_main() }, "spiral_main", 1L shl 30)
    spiral_thread.start()
    spiral_thread.join()
    System.exit(spiral_exit_code)
}