# w, h = map(int, input().split())
# lst = [list(input()) for _ in range(h)]
# print(lst)

msg = "@Hello"
seed = 581980637
off = 10
"135 155 214 19 183 44"
def rnd(o=0):
    s = 0
    n = lambda s: (840 * s + 4347) % 7140
    i = 0
    while i < o:
        s = n(s)
        i += 1
    while 1:
        s = n(s)
        yield s

def cipher(s, o):
    gen = rnd(o)
    ans = []
    for c in s:
        x = 0xff & (gen.__next__() ^ ord(c))
        ans.append(x)
    return ans
# print(cipher(msg, off))

def find(lst):
    gen = rnd()
    u = ord('@')
    k = 0
    while k < 16:
        s = (gen.__next__() ^ u) & 0xff
        k += 1
        if s == lst[0]:
            break
    ans = ""
    for n in lst[1:]:
        ans += chr((gen.__next__() ^ n) & 0xff)
    return ans
l = [135, 155, 214, 19, 183, 44]
print(find(l))