The translation from the Berland language into the Birland language is not an easy task. Those languages are very similar: a berlandish word differs from a birlandish word with the same meaning a little: it is spelled (and pronounced) reversely. For example, a Berlandish word code corresponds to a Birlandish word edoc. However, it's easy to make a mistake during the «translation». Vasya translated word *s* from Berlandish into Birlandish as *t*. Help him: find out if he translated the word correctly.
The first line contains word *s*, the second line contains word *t*. The words consist of lowercase Latin letters. The input data do not consist unnecessary spaces. The words are not empty and their lengths do not exceed 100 symbols.
input1 = input()
input2 = input()


if input1 == input2:
          print("NO")
if input1 != input2:
                    if input1[0] == input2[-0]:
                              if input1[1] == input2[-1]:
                                        if input1[2] == input2[-2]:
                                                  if input1[3] == input2[-3]:
                                                            print("YES")
                    else:
                                        print("NO")
          