import java.io.*; import java.util.*; import java.text.*; import java.math.*; import java.util.regex.*; public class Solution { static int solve(int[] a) { // Return the sum of S(S(A)) modulo 10^9+7. List li=new ArrayList(); int k,i,j,l,max=0,sum=0; for(k=0;kmax) max=a[l]; } li.add(new Integer(max)); sum+=(max%(Math.pow(10,9)+7)); } } int n=li.size(); //List li2=new ArrayList(li); for(k=1;kmax) max=li.get(l); } sum+=(max%(Math.pow(10,9)+7)); } } return sum; } public static void main(String[] args) { Scanner in = new Scanner(System.in); int n = in.nextInt(); int[] a = new int[n]; for(int a_i = 0; a_i < n; a_i++){ a[a_i] = in.nextInt(); } int result = solve(a); System.out.println(result); in.close(); } }