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.
ch1=input();
ch2=input();
i=0;j=len(ch2)-1;k=0;rep='';
while (i<len(ch1))&(j>0):
    if ch1[i]!=ch2[j]:
        k=k+1;
    i=i+1;
    j=j-1;
if k==0:
    rep='YES';
else: rep='NO';
print(rep);