src = 'I'
k = 0x49
bytes = [0x89, 0x2C, 0xA5, 0x78, 0x1D, 0x7D, 0xE2, 0x56]

for b in bytes:
    r = [x for x in range(0, 255) if (k + x * 2) % 0xFF == b][0]
    k += r
    src += chr(r)

print(src)