posun = int(raw_input("Zadaj posun: "))
text = raw_input("Zadaj text: ")
E = []
D = []
for i in text:
    cislo = ord(i) - 65
    E.append(chr(((cislo + 3) % 26) + 65))
    D.append(chr(((cislo+(26-posun)) % 26) + 65))
print "Encrypt: " + "".join(E)
print "Decrypt: " + "".join(D)