#!/bin/python3

import sys

def maxTransform(Ar):
    B = []
    for k in range(1,len(Ar)):
        for i in range(len(Ar) - k):
            j = i + k
            temp = Ar[i:j+1]    
            if len(temp) != 0 :
                B.append(max(temp)) 
    return B                    

def solve(A):
    M = pow(10, 9) + 7
    for i in range(2):
        A += maxTransform(A)
    total = sum(A)%M    
    return total

if __name__ == "__main__":
    n = int(input().strip())
    a = list(map(int, input().strip().split(' ')))
    result = solve(a)
    print(result)