I think everyone had a period in their childhood when after reading adventure books, they wanted to find a treasure. My brother and I were no exception, and since we lived in a private house, the search started from our own yard. Having seen us with the blades and with a determined attitude, the father pointed out the supposed place under the fence, where the treasure was most likely. said and done. It was very difficult to dig: a very rocky spot, weak child handles, huge spades. And the father all walked with a mysterious smile and encouraged to dig deeper, because "no one digs the treasure on the surface." After an hour of forging there was a half-meter hole, no treasure and moss in our hands, we finished the excavations. And the next day we saw that in that same pit the father planted grapes. The puzzle came.