Sort the Array

read(n)
for i = 1 -> n:
  read(a[i])

l = r = 1
s = sorted(a)

for i = 1 -> n:
  if a[i] != s[i]:
    l = i;
    break;

for i = n -> 1:
  if a[i] != s[i]:
    r = i
    break
# reverse
i = l, j = r
while i < j:
  swap(a[i], a[j])
  i++, j--

if a == s:
  print('yes')
  print(l, r)
else:
  print('no')