9513: ABC220 —— A - Find Multiple
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Description
Print a number between $A$ and $B$ (inclusive) that is a multiple of $C$.
If there is no such number, print `-1`.
If there is no such number, print `-1`.
Input
Input is given from Standard Input in the following format:
```
$A$ $B$ $C$
```
```
$A$ $B$ $C$
```
Output
Print the answer.
If there is no number with the desired property, print `-1`.
If there is no number with the desired property, print `-1`.
Constraints
- $1 \leq A \leq B \leq 1000$
- $1 \leq C \leq 1000$
- All values in input are integers.
- $1 \leq C \leq 1000$
- All values in input are integers.
Sample 1 Input
123 456 100
Sample 1 Output
200
300 or 400 would also be accepted.
Sample 2 Input
630 940 314
Sample 2 Output
-1