/**
 * We declare a package-level function main which returns Unit and takes
 * an Array of strings as a parameter. Note that semicolons are optional.
 */

data class Cell(val x: Int, val y: Int, var value: Int)

data class Action(val x: Int, val y: Int, val offsetX: Int, val offsetY: Int)

fun action(arr: List<List<Cell>>, action: Action) {
    arr
        .slice(action.x-action.offsetX..action.x+action.offsetX)
        .forEach { row ->
            row
                .slice(action.y-action.offsetY..action.y+action.offsetY)
                .forEach { it.value += if (it.value != 0) 1 else 0 }
        }
    val targetCell = arr[action.x][action.y]
    targetCell.value -= if (targetCell.value != 1) 2 else 0
}

fun main() {
    // generate array
    var arr = (0..10).map {
        x -> (0..5).map {
            y -> Cell(x, y, 10)
        }
    }
    action(arr, Action(3,3,2,1))
    // print with new lines
    arr.forEach { println(it) }
}