fun main() {
    val builder = StringBuilder()

    val n = readInputLine().toInt()
    val aArr = readInputLine().split(" ").map { it.toInt() }.toIntArray()

    var addCnt = 0

    for (i in n - 1 downTo 0) {
        if ((addCnt + aArr[i]) % (i + 1) != 0) {
            println("No")
            return
        }
        addCnt += (addCnt + aArr[i]) / (i + 1)
    }

    builder.appendln("Yes")

    print(builder.toString())
}

fun readInputLine(): String {
    return readLine()!!
}