#!/bin/python3

import sys

def solve(A):
    b=[]
    sum=0
    max=-99999
    for i in range(0,2):
        for k in range(0,len(A)):
            for i in range(0,len(A)-k):
                j=i+k
                for i1 in range(i,j+1):
                    if(A[i1]>max):
                        max=A[i1]
                b.append(max)
                max=-9999
        A=b;
        b=[]
    for i in range(0,len(A)):
        sum=sum+A[i]
    return sum%(10**9+7)
if __name__ == "__main__":
    n = int(input().strip())
    a = list(map(int, input().strip().split(' ')))
    result = solve(a)
    print(result)