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# -*- coding: cp1252 -*-

letters = [' ', '!', '"', '#', '$', '%', '&', "'", '(', ')', '*', '+', ',', '-', '.', '/', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ':', ';', '<', '=', '>', '?', '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '[', '\\', ']', '^', '_', '`', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~']

def encode(pw,code):
             #pw = passwort
    code2 = []
    for i in code:
        code2.append(letters.index(i))
    code3 = ""
    ap = 0
    apo = 0
    px = 0
    for i in code2:
        ap = i+int(str(pw)[px])+apo
        while ap<0:
            ap += 95
        while ap > 94:
            ap -= 95
        px += 1
        if px == len(str(pw)):
            px = 0
        code3+=str(ap)
        print int(i), apo, int(str(pw)[px]), ap
        apo = i
    print " "
    return code3

def decode(pw,code):
    code2 = []
    for i in range(0, int(len(code)/2)):
        j = 2*i
        code2.append(code[j]+code[j+1])
    ap = 0
    apo = 0
    px = 0
    code3 = ""
    for k in code2:
        ap = int(k)-apo-int(str(pw)[px])
        while ap<0:
            ap += 95
        while ap > 94:
            ap -= 95
        px += 1
        if px == len(str(pw)):
            px = 0
        print ap, apo, int(str(pw)[px]), int(k)
        apo=ap
        code3+=letters[ap]
    return code3

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import coding
# -*- coding: cp1252 -*-
variable = raw_input()
print coding.decode(123,coding.encode(123,variable))

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>>> for byte in 'ä'.decode('utf8'):
...     print ord(byte)
... 
228
>>> for byte in 'a'.decode('utf8'):
...     print ord(byte)
... 
97

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>>> for byte in 'ä':
...     print(ord(byte))
... 
228

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>>> for i in '€'.decode('utf8'):
...     print ord(i)
... 
8364

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>>> for byte in u'\u20ac'.encode('utf-8'):
...  print ord(byte)
... 
226
130
172

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from itertools import cycle
letters = [chr(i) for i in range(32,127)]

def encode(pw,code):  #pw = passwort
    passw = cycle(int(i) for i in str(pw))
    result = ""
    apo = 0
    for ch in code:
        i = letters.index(ch)
        ap = (i+next(passw)+apo) % len(letters)
        result+=letters[ap]
        apo = i
    return result

def decode(pw,code):
    passw = cycle(int(i) for i in str(pw))
    result = ""
    apo = 0
    for ch in code:
        i = letters.index(ch)
        ap = (i-next(passw)-apo) % len(letters)
        result+=letters[ap]
        apo=ap
    return result