Problem Statement

In a test, you correctly answered $1$ problem worth $A$ points per $1$ problem, and correctly answered $B$ problems worth $300$ points per $1$ problem.

Output the total score of the problems you answered correctly.

Constraints

• $1000 \le A \le 32000$.
• $1 \le B \le 10$.
• All input values are integers.

Input

The input is given in the following format:

A
B

Output

Output the total score of the problems you answered correctly.

Do not output anything other than the answer. (Do not output sentences prompting for input, etc.)

For the output format, you may also refer to Practice Problems and Their Sample Solutions.

Sample Input $1$

1000
1

Sample Output $1$

1300

In the test, you correctly answered $1$ problem worth $1000$ points per $1$ problem, and correctly answered $1$ problem worth $300$ points per $1$ problem.

The total score of the problems you answered correctly is $1000 \times 1 + 300 \times 1 = 1300$. Therefore, output $1300$.

Sample Input $2$

8000
2

Sample Output $2$

8600

In the test, you correctly answered $1$ problem worth $8000$ points per $1$ problem, and correctly answered $2$ problems worth $300$ points per $1$ problem.

The total score of the problems you answered correctly is $8000 \times 1 + 300 \times 2 = 8600$. Therefore, output $8600$.

Sample Input $3$

32000
3

Sample Output $3$

32900

In the test, you correctly answered $1$ problem worth $32000$ points per $1$ problem, and correctly answered $3$ problems worth $300$ points per $1$ problem.

The total score of the problems you answered correctly is $32000 \times 1 + 300 \times 3 = 32900$. Therefore, output $32900$.

Sample Input $4$

1000
10

Sample Output $4$

4000

In the test, you correctly answered $1$ problem worth $1000$ points per $1$ problem, and correctly answered $10$ problems worth $300$ points per $1$ problem.

The total score of the problems you answered correctly is $1000 \times 1 + 300 \times 10 = 4000$. Therefore, output $4000$.