crypt = {}

for i in range(33,124):
    r = (3 * i - 61 ) % 91 + 33
    c1 = chr(r)
    if r % 2 == 0:
        c2 = chr( (2 * i - 31) % 91 + 33)
        crypt[ chr(i) ] = c1 + c2
    else:
        c2 = chr( ( 2 * i - 32) % 91 + 33)
        c3 = chr( ( 3 * i - 60) % 91 + 33)
        crypt[ chr(i) ] = c1 + c2 + c3

M = "informatique"
r = ''

for c in M:
    r += str( crypt.get(c) )

print(r)