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.
# https://codeforces.com/problemset/problem/41/a
# CodeForces submission by Raphaël "Scoone" Chauveau


def main():
    normal = input()
    reversed = input()

    nlen = len(normal)
    if nlen != len(reversed):
        print('NO')
        return

    for i in range(nlen):
        if normal[i] != reversed[nlen - i - 1]:
            print('NO')
            return
    print('YES')


if __name__ == '__main__':
    main()
