import io:*

uni packed {
    var a: int
    var b: double
}

obj loose {
    var a: int
    var b: double
}

fun main():int {
    var a: packed
    var b: loose
    println(#sizeof<packed> < #sizeof<loose>)
    a.a = 4
    println(a.a)
    a.b = 4.4
    println(a.b)
    return 0
}