import sys
print ''.join(chr(int(i, 16)) for i in sys.stdin.read().split())
aW1wb3J0IHN5cwpwcmludCAnJy5qb2luKGNocihpbnQoaSwgMTYpKSBmb3IgaSBpbiBzeXMuc3RkaW4ucmVhZCgpLnNwbGl0KCkp
MjMgNjkgNmUgNjMgNmMgNzUgNjQgNjUgMjAgM2MgNzMgNzQgNjQgNjkgNmYgMmUKNjggM2UgMGEgMGEgNjkgNmUgNzQgMjAgNmQgNjEgNjkgNmUgMjggNzYgNmYgNjkKNjQgMjkgMjAgN2IgMGEgMjAgMjAgMjAgMjAgNzAgNzUgNzQgNzMgMjggMjIgNjgKNjUgNmMgNmMgNmYgMjAgNzcgNmYgNzIgNmIgNWMgNmUgMjIgMjkgM2IgMGEgMjAKMjAgMjAgMjAgNzIgNjUgNzQgNzUgNzIgNmUgMjAgMzAgM2IgMGEgN2QgMGE=
23 69 6e 63 6c 75 64 65 20 3c 73 74 64 69 6f 2e
68 3e 0a 0a 69 6e 74 20 6d 61 69 6e 28 76 6f 69
64 29 20 7b 0a 20 20 20 20 70 75 74 73 28 22 68
65 6c 6c 6f 20 77 6f 72 6b 5c 6e 22 29 3b 0a 20
20 20 20 72 65 74 75 72 6e 20 30 3b 0a 7d 0a