#!/bin/python

import sys

def solve(A):
    #  Return the sum of S(S(A)) modulo 10^9+7.
    B = []
    for k in range(len(A)):
        for i in range(len(A)-k):
            j = k+i
            B.append(max(A[i:j+1]))
    A = B
    B = []
    for k in range(len(A)):
        for i in range(len(A)-k):
            j = k+i
            B.append(max(A[i:j+1]))

    return sum(B)%10**9


if __name__ == "__main__":
    n = int(raw_input().strip())
    A = map(int, raw_input().strip().split(' '))
    result = solve(A)
    print result