#!/bin/python

import sys

def solve(A):
    #  Return the sum of S(S(A)) modulo 10^9+7.
    B=list(A)
    for k in range(1,len(A)):
        for i in range(0,len(A)-k):
            B.append(max(A[i:i+k+1]))
    return B

def ssa(A):
    return sum(solve(A)) % 1000000007

if __name__ == "__main__":
    n = int(raw_input().strip())
    A = map(int, raw_input().strip().split(' '))
    A1 = solve(A)
    result = ssa(A1)
    print result