// SIBLING:
fun foo(a: Int): Int {
    val b: Int = 1
    for (n in 1..a) {
        if (b(a, b)) break
    }
    return 1
}

fun b(a: Int, b: Int): Boolean {
    when {
        a + b > 0 -> return true
        a - b > 0 -> return true
        else -> println(0)
    }
    return false
}