Lucky Clover

Chef heard that four-leaf clovers bring good luck, so he went looking for one. In his search, Chef found $N$ clovers in total. Out of them, **exactly one** was a four-leaf clover, and all the others were three-leaf clovers. How many leaves did Chef collect in total, across all the clovers? ### Input The only line of input will contain a single integer $N$, the number of clovers Chef found. ##