fun double(a): u8 {
    return a + a;
}

fun quadruple(a): u8 {
    return double(double(a));
}

fun reuse(): u0 {
    var one = 2;
    var two = 4;
    var three = 6;
}

fun main(): u0 {
    var a = quadruple(4);
    var one = 1;
    var two = 2;
    var three = 3;
    reuse();
}