URI Online Judge | 3165
# Twin Prime

**Timelimit: 1**

By Eduardo Gomes Carvalho Brazil

Write a program which reads an given integer **N** and prints a twin prime which has the maximum size among twin primes less than or equals to **N**.

According to wikipedia "A twin prime is a prime number that is either 2 less or 2 more than another prime number—for example, either member of the twin prime pair (41, 43). In other words, a twin prime is a prime that has a prime gap of two".

The entry must contain an integer **N**, where (5 ≤ **N** ≤ 1000).

The output must contain two integers **X** and **Y** separated by space, representing the two closest twin prime numbers less than or equal to **N**.

Input Sample | Output Sample |

44 |
41 43 |