CCC '24 J1 - Conveyor Belt Sushi

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 \3$, each green plate of sushi costs$$4$, and each blue plate of sushi costs$$5$.

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, $R$, representing the number of red plates chosen. The second line contains a non-negative integer, $G$, representing the number of green plates chosen. The third line contains a non-negative integer, $B$, representing the number of blue plates chosen.

Output Specification

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

Sample Input 1

Sample Output 1

Explanation

This customer chose $0$ red plates, $2$ green plates, and $4$ blue plates. Therefore, the cost of the meal in dollars is $0 \times 3 + 2 \times 4 + 4 \times 5 = 28$.