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.
# 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.

# Input
# 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.

# Output
# If the word t is a word s, written reversely, print YES, otherwise print NO.

mainWord = input()
revWord = input()

if (revWord == mainWord[::-1]):
    print("YES")
else:
    print("NO")