## Phantom's Python Challenge

View as PDFAfter all the ordeal, Christine decided to save your lives by kissing the Phantom. That was very nice of her. However, the Phantom considers letting Christine leave with Raoul, if and only if *you* can convince him that your party is worthy. He challenges you to write a program that shows all the primes under a specific number, while marking the twin primes. Easy as it may sound, the Phantom is also an expert programmer: you have to prove yourself to be at least as good as him. In Python, he expects you to write it in one statement. This means, no new lines or semi-colons are allowed. To prevent the cheap way of achieving this, you are also not allowed to use `eval`

or `exec`

. To make sure he did not save that scarf for nothing, Raoul bribes you with 30 staggering points.

#### Input Specification

The input will be one line, containing the number , such that .

#### Output Specification

All the primes smaller than , separated by whitespace, with a `*`

after every number forming a twin prime with another. A twin prime is defined as a prime number such that or are prime.

#### Scoring

If your solution is correct and contains only *one* statement without `eval`

or `exec`

, you get 10 points. For full points, your solution must be at most 160 characters long. More accurately, you get points, capped at 30, where is the length of your solution, if it is correct.

#### Sample Input

`50`

#### Sample Output

```
2
3*
5*
7*
11*
13*
17*
19*
23
29*
31*
37
41*
43*
47
```

## Comments

e: help

Work on it for more than 2 hours 😃

blasphemy :o

Never mind :), great problem btw!

Thanks for the fun problem, guys!

Never did I think I would see the day someone actually solves this problem.

Good job. Now try to make it even shorter!

Too late, I peeked at your code.

Increased memory limit to 256M. This will allow the problem to be solvable on 64-bit judges.

Due to my discovery of an 146 character solution, the old character limit of 220 no longer makes any sense. Therefore, the full score solution now requires 160 characters.

This problem is now out of 30 points so that any old score will not decrease.