startup

findtrain = function()
for i=1, 4 do
turtle.select(16)
if turtle.compare() then
turtle.turnLeft()
end
end
turtle.select(1)
end

findtrain()
print("how many stacks")
stacks = read()
for i=1, stacks do
p=0
while turtle.suck(64)==false&&p<4 do
p += 1
turtle.turnLeft()
end
findtrain()
turtle.drop()
end