-- FUNCTIONS
function signal()
    rs.setOutput("back",true)
    sleep(1)
    rs.setOutput("back",false)
end

function checkWater()
  rednet.open('bottom')
  rednet.broadcast('check_water')
  id, result = rednet.receive()
  rednet.close()
  return result
end

function slitVodu()
   if checkWater()
      signal()
      print('Voda slita')
   else
      print('Voda uzhe slita')
   end
end

-- PROGRAM
print ("Dobro pozhalovat")
print ("1 - slit' vodu ")
print ("2 - napolnit' vodoy ")

text = read()
if text == '1' then
    slitVodu()
elseif text == '2' then
    --
else
    print('Nepravilnaya komanda')
end