Canadian Computing Competition: 2023 Stage 1, Junior #1

In the game, Deliv-e-droid, a robot droid has to deliver packages while avoiding obstacles. At the end of the game, the final score is calculated based on the following point system:

• Gain 50 points for every package delivered.
• Lose 10 points for every collision with an obstacle.
• Earn a bonus 500 points if the number of packages delivered is greater than the number of collisions with obstacles.

Your job is to determine the final score at the end of a game.

Input Specification

The input will consist of two lines. The first line will contain a non-negative integer P, representing the number of packages delivered. The second line will contain a non-negative integer C, representing the number of collisions with obstacles.

Output Specification

The output will consist of a single integer F, representing the final score.

Sample Input 1

5
2

Sample Output 1

730

Explanation for Sample 1

There are 5 packages delivered, so 5×50=250 points are gained. There are 2 collisions, so 2×10=20 points are lost. Since 5>2, a bonus 500 points are earned. Therefore, the final score is 250−20+500=730.

Sample Input 2

0
10

Sample Output 2

-100

Explanation for Sample 2

There are 0 packages delivered, so 0×50=0 points are gained. There are 10 collisions, so 10×10=100 points are lost. Since 0≤10, no bonus points are earned. Therefore, the final score is 0−100+0=−100.