ClearTrees

print("+-------------------------------------+")
print("| Area length = ?                   |")
print("+-------------------------------------+")
lenx = tonumber(read())
print("+-------------------------------------+")
print("| Area width = ?                   |")
print("+-------------------------------------+")
leny = tonumber(read())

function fellTree()
    if (turtle.detect()) then
        turtle.dig()
        turtle.digUp()
        turtle.up()
        fellTree()
        turtle.down()
    end
end

for x = 0, lenx, 1 do
    for y = 0, leny, 1 do
        success, id = turtle.inspect()
        if success then
            if string.match(id.name, "log") then
                fellTree()
            end
        end
        while (turtle.detect()) do
            turtle.digUp()
            turtle.up()
        end
        turtle.forward()
        while (not turtle.detectDown()) do
            turtle.digDown()
            turtle.down()
        end
    end
    turtle.turnRight()
    turtle.turnRight()
    for y = 0, leny, 1 do
        while (turtle.detect()) do
            turtle.digUp()
            turtle.up()
        end
        turtle.forward()
        while (not turtle.detectDown()) do
            turtle.digDown()
            turtle.down()
        end
    end
    turtle.turnLeft()
    while (turtle.detect()) do
        turtle.digUp()
        turtle.up()
    end
    turtle.forward()
    while (not turtle.detectDown()) do
        turtle.digDown()
        turtle.down()
    end
    turtle.turnLeft()
end