In every major city, night lights are lit at night. They bring light to the streets of the night city. But here in one park the light went out and you as an electrician will have to go to the game Daily Net and eliminate the breakdown. Before you on the screen will be visible light bulbs and electric circuit. It will be open. You will need to find a power source. Now from it build a single system of wires so that all the light bulbs are lit. To do this, twist the elements of the chain in space so that they are connected together. Once you finish your work all the light bulbs will again burn and carry light.