#!/bin/python

import sys

def S(a):
    res=[]
    for k in range(len(a)):
        for i in range(0, len(a)-k):
            j=i+k
            res.append(max(a[i:j+1]))
    #print res
    return res

def solve(A):
    #  Return the sum of S(S(A)) modulo 10^9+7.
    return sum(S(S(A)))
if __name__ == "__main__":
    n = int(raw_input().strip())
    a = map(int, raw_input().strip().split(' '))
    result = solve(a)
    print result