Snow.kt

fun main() {
    val n = readln().toInt()
    val input = readln().split(" ").map { it.toInt() }

    val result = solve(input)
    if (result == null) {
        println("NO")
    } else {
        println("YES")
        println(result.joinToString(" "))
    }
}

fun solve(input: List<Int>): List<Int>? {
    var previous = 0
    val delta = mutableListOf<Int>()

    input.forEach { item ->
        val expectedAtLeast = previous + 1

        val actual = when (item) {
            -1 -> expectedAtLeast
            else -> {
                if (item < expectedAtLeast) return@solve null
                item
            }
        }

        delta.add(actual - previous)
        previous = actual
    }

    return delta
}