import java.util.*;

public class Main {
    
    static int N;
    static int[] V = new int[1000];
    
    public static int  rec(int i){
        int ret;
        if(i >= N){ret = 0;}
        else{
            ret = Math.max(rec(i+1), rec(i+2)+V[i]);
            System.out.println(rec(i+1)+ " " +(rec(i+2)+V[i]));
        }
        
        return ret;
    }
    
    public static void main(String[] args) throws Exception {
        // Here your code !
        Scanner sc = new Scanner(System.in);
        N = sc.nextInt();
        
        for(int i=0; i<N; i++) V[i] = sc.nextInt();
        System.out.println(rec(0));
        
        
    }
}