When the search reaches a beach full of rocks He decided to keep the individual chunks of stone. If not, it throws it into the sea to. He used to be, it does not attempt to find the stone.
As for the beach somewhere. Which is filled with stones He decided to take a look at a lump of rock. If not, it will throw them into the sea. He tried for a long time I have not found a stone.
When looking to the beach, one of which is filled with rocks, he decided to keep the stone to take one at a time. If not, they will throw it into the sea, he used the effort. I still can't find the stone.