#P802M. April Fools' Problem (easy)

April Fools' Problem (easy)

Description

The marmots have prepared a very easy problem for this year's HC2 – this one. It involves numbers n, k and a sequence of n positive integers a1, a2, ..., an. They also came up with a beautiful and riveting story for the problem statement. It explains what the input means, what the program should output, and it also reads like a good criminal.

However I, Heidi, will have none of that. As my joke for today, I am removing the story from the statement and replacing it with these two unhelpful paragraphs. Now solve the problem, fools!

The first line of the input contains two space-separated integers n and k (1 ≤ k ≤ n ≤ 2200). The second line contains n space-separated integers a1, ..., an (1 ≤ ai ≤ 104).

Output one number.

Input

The first line of the input contains two space-separated integers n and k (1 ≤ k ≤ n ≤ 2200). The second line contains n space-separated integers a1, ..., an (1 ≤ ai ≤ 104).

Output

Output one number.

Samples

8 5
1 1 1 1 1 1 1 1

5
10 3
16 8 2 4 512 256 32 128 64 1

7
5 1
20 10 50 30 46

10
6 6
6 6 6 6 6 6

36
1 1
100

100