package minesweeper

import kotlin.random.Random
const val fieldSize = 9
val field = MutableList(fieldSize) {
    MutableList(fieldSize) { "." }
}

fun main() {
    var mines = readln().toInt()
    while (mines > 0) {
        val row = Random.nextInt(0, fieldSize - 1)
        val cell = Random.nextInt(0, fieldSize - 1)
        if (field[row][cell] == "X") {
            continue
        } else {
            field[row][cell] = "X"
            helpInTheGame(row, cell)
            mines--
        }
    }
    for (raw in field) {
        println(raw.joinToString(""))
    }
}

fun helpInTheGame(row: Int, cell: Int) {
    if(row == 0 && cell == 0) {
        topLeft()
    } else if (row == 0 && cell == fieldSize - 1) {
        topRight()
    } else if (row == fieldSize - 1 && cell == 0) {
        bottomLeft()
    } else if (row == fieldSize - 1 && cell == fieldSize - 1) {
        bottomRight()
    } else if (row == 0) {
        firstRow(cell)
    } else if (row == fieldSize - 1) {
        lastRow(cell)
    } else if (cell == 0) {
        leftRow(row)
    } else if (cell == fieldSize - 1) {
        rightRow(row)
    } else placedAnywhere(row, cell)
}