import kotlin.* import kotlin.collections.* const val a = mapOf(1 to "1", 2 to "2", 3 to "3").size const val b = emptyMap().size const val contains1 = mapOf(1 to "1", 2 to "2", 3 to "3").containsKey(1) const val contains2 = mapOf(1 to "1", 2 to "2", 3 to "3").contains(1) const val contains3 = mapOf(1 to "1", 2 to "2", 3 to "3").contains("1") const val contains4 = mapOf(1 to "1", 2 to "2", 3 to "3").containsValue("1") const val get1 = mapOf(1 to "1", 2 to "2", 3 to "3").get(1)!! const val get2 = mapOf(1 to "1", 2 to "2", 3 to "3")[2]!! const val get3 = mapOf(1 to "1", 2 to "2", 3 to "3")[0].toString() const val keys = mapOf(1 to "1", 2 to "2", 3 to "3").keys.size const val values = mapOf(1 to "1", 2 to "2", 3 to "3").values.size const val entries = mapOf(1 to "1", 2 to "2", 3 to "3").entries.size