fun main() {
    val n = readLine()!!.trim().toInt()
    val array = Array(n){IntArray(n){0} }
    for (i in 0 until n) {
        for (j in 0 until n) {
            array[(i + j) % n][(i - j + n) % n] = i + 1
        }
    }
    println(array.joinToString("\n"){it.joinToString(" ")})
}