import java.util.Scanner;
import java.util.stream.IntStream;

// Java 17: sealed abstract classes
public sealed abstract class SolutionIvanJava17 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println(IntStream.range(0, scanner.nextInt()).map(i -> scanner.nextInt()).sorted().limit(2).sum());
    }
}

final class Solution extends SolutionIvanJava17 {}