#!/bin/python3

import sys

def solve(A):
    #  Return the sum of S(S(A)) modulo 10^9+7.
    return sum(max_transform(max_transform(A)))%1000000007

def max_transform(A):
    B = []
    for k in range(0, len(A)):
        for i in range(0, len(A)-k):
            j = k+i
            B.append(max(A[i:(j+1)])%(1000000007))
    return B

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