PizzaForces

PizzaForces is Petya's favorite pizzeria. PizzaForces makes and sells pizzas of three sizes: small pizzas consist of $$$6$$$ slices, medium ones consist of $$$8$$$ slices, and large pizzas consist of $$$10$$$ slices each. Baking them takes $$$15$$$, $$$20$$$ and $$$25$$$ minutes, respectively.

Petya's birthday is today, and $$$n$$$ of his friends will come, so he decided to make an order from his favorite pizzeria. Petya wants to order so much pizza that each of his friends gets at least one slice of pizza. The cooking time of the order is the total baking time of all the pizzas in the order.

Your task is to determine the minimum number of minutes that is needed to make pizzas containing at least $$$n$$$ slices in total. For example:

• if $$$12$$$ friends come to Petya's birthday, he has to order pizzas containing at least $$$12$$$ slices in total. He can order two small pizzas, containing exactly $$$12$$$ slices, and the time to bake them is $$$30$$$ minutes;
• if $$$15$$$ friends come to Petya's birthday, he has to order pizzas containing at least $$$15$$$ slices in total. He can order a small pizza and a large pizza, containing $$$16$$$ slices, and the time to bake them is $$$40$$$ minutes;
• if $$$300$$$ friends come to Petya's birthday, he has to order pizzas containing at least $$$300$$$ slices in total. He can order $$$15$$$ small pizzas, $$$10$$$ medium pizzas and $$$13$$$ large pizzas, in total they contain $$$15 \cdot 6 + 10 \cdot 8 + 13 \cdot 10 = 300$$$ slices, and the total time to bake them is $$$15 \cdot 15 + 10 \cdot 20 + 13 \cdot 25 = 750$$$ minutes;
• if only one friend comes to Petya's birthday, he can order a small pizza, and the time to bake it is $$$15$$$ minutes.