import java.util.*;
public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        String n = scan.nextLine();
        String check = scan.nextLine();
        if(check.contains(" ")){
        	System.out.println("\"assert\"");
        }else{
			long a = Long.parseLong(check);
        	long b = scan.nextLong();
        	long c = scan.nextLong();
			long[] sumList = new long[3];
			sumList[0] = a+b;
			sumList[1] = a+c;
			sumList[2] = b+c;
			Arrays.sort(sumList);
			System.out.println(sumList[1]);
        }
    }
}