j1 — CCO Canadian_Computing_Competition_Junior
Task type: batch | Time limit: 3 s | Memory limit: 512 MB | Difficulty: 2
Algorithms: arithmetic, mathematics, implementation

### Problem J1: Deliv-e-droid

### Problem Description

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
```

### Output for Sample Input 1

```
730
```

### Explanation of Output for Sample Input 1

There are 5 packages delivered, so $5 \times 50 = 250$ points are gained. There are 2 collisions, so $2 \times 10 = 20$ 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
```

### Output for Sample Input 2

```
-100
```

### Explanation of Output for Sample Input 2

There are 0 packages delivered, so $0 \times 50 = 0$ points are gained. There are 10 collisions, so $10 \times 10 = 100$ points are lost. Since $0 \le 10$, no bonus points are earned. Therefore, the final score is $0 - 100 + 0 = -100$.

La version française figure à la suite de la version anglaise.

Starter code: