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.
#文字列入力はするな！！
#carpe diem

'''
         ██╗        ██╗   ███╗   ███╗   ██╗   ████████╗
         ██║        ██║   ████╗ ████║   ██║   ╚══██╔══╝
═════════██╠════════██╠═══██╔████╔██╠═══██╠══════██╠══════════
         ██║        ██║   ██║╚██╔╝██║   ██║      ██║
         ███████╗   ██║   ██║ ╚═╝ ██║   ██║      ██║
         ╚══════╝   ╚═╝   ╚═╝     ╚═╝   ╚═╝      ╚═╝
'''

#文字列入力はするな！！
#carpe diem

for _ in range(1):
    s1=input();s2=input()
    if len(s1)!=len(s2):
        print('NO')
        continue
    flag=True
    n=len(s2)
    for i in range(n):
        if s1[i]!=s2[n-i-1]:
            flag=False
            break
    
    if flag:
        print('YES')
    else:
        print('NO')

    

#carpe diem 
#carpe diem