Problem Statement

A shop sells $N$ kinds of fruits, Fruit $1,\dots ,N$, at prices of $p_1,\dots ,p_N$ yen per item, respectively. (Yen is the currency of Japan.)

Here, we will choose $K$ kinds of fruits and buy one of each chosen kind. Find the minimum possible total price of those fruits.

Constraints

• $1\le K\le N\le 1000$
• $1\le p_i\le 1000$
• All values in input are integers.

Sample Input 1 Copy

5 3
50 100 80 120 80

Sample Output 1 Copy

210

This shop sells Fruit $1$, $2$, $3$, $4$, and $5$ for $50$ yen, $100$ yen, $80$ yen, $120$ yen, and $80$ yen, respectively.

The minimum total price for three kinds of fruits is $50+80+80=210$ yen when choosing Fruit $1$, $3$, and $5$.

Sample Input 2 Copy

1 1
1000

Sample Output 2 Copy

1000