Since time immemorial, the citizens of Dmojistan and Pegland have been at war. Now, they have finally signed a truce. They have decided to participate in a tandem bicycle ride to celebrate the truce. There are N citizens from each country. They must be assigned to pairs so that each pair contains one person from Dmojistan and one person from Pegland. 
Each citizen has a cycling speed. In a pair, the fastest person will always operate the tandem bicycle while the slower person simply enjoys the ride. In other words, if the members of a pair have speeds a and b, then the bike speed of the pair is max(a,b). The total speed is the sum of the N individual bike speeds. 
For this problem, in each test case, you will be asked to answer one of two questions:
 • Question 1: what is the minimum total speed, out of all possible assignments into pairs?
 • Question 2: what is the maximum total speed, out of all possible assignments into pairs?

The first line will contain the type of question you are to solve, which is either 1 or 2. 
The second line contains N (1 ≤ N ≤ 100). 
The third line contains N space-separated integers: the speeds of the citizens of Dmojistan. 
The fourth line contains N space-separated integers: the speeds of the citizens of Pegland.
Each person’s speed will be an integer between 1 and 1 000 000.
For 8 of the 15 available marks, questions of type 1 will be asked. For 7 of the 15 available marks, questions of type 2 will be asked.

Output the maximum or minimum total speed that answers the question asked.

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