# b_filter_string.py

# b_filter_string.py
from random import *

zzz = '''
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:¥ñL⌐Ç7Σ≡Üo└"1,Éⁿ╪%)╚@╘╤╝»╡ä∙^òα<t∞╟╣▌═ìεsêí|⌡▒
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[≥~Fué&∙╔#Å6▒ô╣9ö¡èª╬┼n(¥╤Στ█í⌡¿╢▌╫ÿ┴`#╛/>2)à∞Θ
₧çφª╢í═±[5ï)ÿ╔║┤æ÷µ▀Ä┼Θ╛┴$╓ !╓¡}#┘ü2_=,%ß∙²⌐9Ö&
Tⁿσhæ▐2╒≥¡=╣¬&Ä≡┐[ü╤ Ö¥ëeóë6╩Ñ_┴▄.┼Θ@╧ò)sß▒÷╡e
π╒▌╖àª▒Ü╤·¥6\ò╚@鬲9╜Ωµ3'}┴«╬aô#╩±!┌re*ì⌡╗∩ë`0í
wΩ#Ñ&¢h¡═>÷2■¡ûφ┘Γ*ª`Æ▓µa╢·┼;6t▌èü╒±\ƒå║╥~.ì├╩╜
è?9Ä√Æ▐w⌡o7ß╬«╛r╙é}ñδá┘╦.\╕╚ÜεΦ+┌≥dsà■¼5'Ñû╜9`┬
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,σfó(║ÜÆï┌∩╩¬3░╞ô╫Ω╒å │;τ]à╥≈▀├{?─1$r╢⌠₧ù7o¿·m
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╞µ!%┬ÿ∩?╥,╠╓£]Å▀çö┐%ª√▄½╨tú≤}«∞8│îoä║'≈π4ç;ƒ╣/
δêr e▓mσΣ0<áoÅ+┌4╗ö╙┐╟:█■v¢eú╕ïτ½]⌠≈│º{±»ä╦┬╨ù
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╖ Ç│┐;∩7"█0¼╚]π╧&Φ▒@{th¿Öφ╘Γ4É╝ïñ√°╠â├e₧ëá⌠,ö╪
╨ó°e░ΦΣü─╔┤»xtê8^?≤0╠¿╘δ╫╣₧4├⌠òßÅ=▄ù+äì{ⁿrº╗as
'''.strip()

abc = '-abcdefghijklmnopqrstuvwxyz'
p = ['\n'] + [z for z in abc.upper()+abc.lower()]
t = set(zzz)

for z in t:
    if z not in p:
        zzz=zzz.replace(z,'')

print zzz