proc main!() {
    let mut total = 0

    for if x in [1, 2, 3] then y in [x, 2, 3] {
        total += y
    } else {
        total += 1
    }

    for if x in [] then y in [3, 4, 5] {
        total += x
    } else {
        total += 7
    }

    exit total
}