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1146B1100· newbie1s256 MB⌨ stdin/stdout

#implementation #strings

Examples

Sample 1of 4

Input

aaaaa

Output

aaaaa

Sample 2of 4

Input

aacaababc

Output

:(

Sample 3of 4

Input

ababacacbbcc

Output

ababacac

Sample 4of 4

Input

baba

Output

:(

1146B.cpp

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Ln 11·137 BGNU C++20 (64)