# Laser 1 - Factoring

I enjoyed solving this. I wrote a O(n) algorithm to generate the factors.
It can be tricky because we have to output them in ascending order.
Since the stack is reversed, I had to iterate on numbers n to 1 in decreasing order, inserting the factors in a separate stack.

factors.lsr

```txt
rsrU>⌝rwD%⌝prU>(\
U p
# r
U
r
s
\ /
\ /
```

It passes all tests and get the flag

```txt
rgbCTF{l4s3rs_4r3_c00l_r1ght}
```

Original writeup (https://github.com/goswami-rahul/ctf/tree/master/rgbCTF2020/laser1factoring).