n = int(input())
a = list(map(int, input().split()))

idx = [None for _ in range(n)]
for i in range(n):
  idx[a[i]] = i

ans = 0
lb = idx[0]
ub = idx[0]
for x in range(1, n):
  if idx[x] < lb:
    left = lb - idx[x]
    right = n - ub
  elif idx[x] > ub:
    left = lb + 1
    right = idx[x] - ub
  else:
    left = right = 0

  # print(left, right)
  ans += (left * right) * x
  lb = min(lb, idx[x])
  ub = max(ub, idx[x])

ans += n
print(ans)