# Problem Definition

## Description

Given a string, return the total weight carried by a truck over several waypoints. Each waypoint in the string is separated by a whitespace. The string is of the form:

```plaintext
+6b25 +50 -2b25 +10b20 -50
```

### Explanation

```plaintext
+6b25

+ = add to truck
- = remove from truck
6 = # of boxes
25 = weight of each box

+50

1 box of weight 50
```

## Notes