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.
flag = 0
s = str(input())
t = str(input())
if len(s) != len(t) :
    print ("NO")
else :
    length = len(s)
    for i in range(0,length,1) :
        if s[i] != t[length-i-1] :
            flag = 1
            break
    if flag == 0 :
        print ("YES")
    else :
        print ("NO")
	  			   	   		    		 			 		 	