Fox And Names

510C1600· expert2s256 MB⌨ stdin/stdout

Sample 1of 4

Input

3
rivest
shamir
adleman

Output

bcdefghijklmnopqrsatuvwxyz

Sample 2of 4

Input

10
tourist
petr
wjmzbmr
yeputons
vepifanov
scottwu
oooooooooooooooo
subscriber
rowdark
tankengineer

Output

Impossible

Sample 3of 4

Input

10
petr
egor
endagorion
feferivan
ilovetanyaromanova
kostka
dmitriyh
maratsnowbear
bredorjaguarturnik
cgyforever

Output

aghjlnopefikdmbcqrstuvwxyz

Sample 4of 4

Input

7
car
care
careful
carefully
becarefuldontforgetsomething
otherwiseyouwillbehacked
goodluck

Output

acbdefhijklmnogpqrstuvwxyz

510C.cpp

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Ln 11·137 BGNU C++20 (64)

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