9/4/2020

package BaiToanTamHau;
import java.util.Scanner;;
public class Langvudaingayay {

    public static void main(String[] args)
    {
        Scanner mk = new Scanner(System.in);
        int n = mk.nextInt();
        int []A= new int [n+3];
        int i, j, Sum =0;
        for(i=0; i< n; i++)
        {
            A[i]= mk.nextInt();
        }
        for(i =0 ;i<n ;i++)
        {
            Sum +=A[i];
            for(j= i+1;j<n ;j++)
            {
                if(A[i]== A[j])
                {
                    A[j]=0;
                }
            }
        }
        System.out.print(Sum);
    }

}