##### Canadian Computing Competition: 2024 Stage 1, Junior #1

There is a new conveyor belt sushi restaurant in town. Plates of sushi travel around the restaurant on a raised conveyor belt and customers choose what to eat by removing plates.

Each red plate of sushi costs , each green plate of sushi costs , and each blue plate of sushi costs .

Your job is to determine the cost of a meal, given the number of plates of each colour chosen by a customer.

#### Input Specification

The first line of input contains a non-negative integer, , representing the number of red plates chosen. The second line contains a non-negative integer, , representing the number of green plates chosen. The third line contains a non-negative integer, , representing the number of blue plates chosen.

#### Output Specification

Output the non-negative integer, , which is the cost of the meal in dollars.

#### Sample Input

```
0
2
4
```

#### Output for Sample Input

`28`

#### Explanation of Output for Sample Input

This customer chose red plates, green plates, and blue plates. Therefore, the cost of the meal in dollars is .

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