#!/bin/python

import sys
def s(a):
    b = []
    for k in range(len(a)):
        for i in range(len(a)-k):
            j = i+k
            b.append(max(a[i:j+1])%(10**9+7))
    #print b
    return b

def solve(A):
    r = s(s(A))
    return sum(r)%(10**9+7)

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