Turtle logger

a=10
b=10
c=50
function sss()
for i=1,a-1 do
if turtle.getFuelLevel()<=64 then
turtle.select(16)
turtle.refuel(1)
end
mmm()
end
end

function unload()
for i=2,15 do
turtle.select(i)
turtle.dropDown(64)
end
end

function mmm()
uuu=false
if turtle.detect() then uuu=true end
s=1
while turtle.detect() do
turtle.dig()
turtle.digUp()
turtle.up()
s=s+1
end
for z=1,s-1 do
turtle.digDown()
turtle.down()
end
turtle.select(1)
turtle.placeDown()
turtle.forward()
turtle.suckDown()
if uuu then
turtle.digDown()
end
turtle.placeDown()
end

while true do
unload()
turtle.forward()
turtle.suckDown()
turtle.forward()
turtle.suckDown()
for n=1,b/2 do
sss()
turtle.turnLeft()
turtle.forward()
turtle.suckDown()
turtle.turnLeft()
sss()
turtle.turnRight()
turtle.forward()
turtle.suckDown()
turtle.turnRight()
end
turtle.turnRight()
turtle.turnRight()
turtle.forward()
turtle.suckDown()
turtle.forward()
turtle.suckDown()
turtle.turnLeft()
for i=1,b do
turtle.forward()
turtle.suckDown()
end
turtle.turnLeft()
unload()
sleep(c)
end