Alphabetic Removals

999C1200· pupil2s256 MB⌨ stdin/stdout

#implementation

Examples

Sample 1of 3

Input

15 3
cccaabababaccbc

Output

cccbbabaccbc

Sample 2of 3

Input

15 9
cccaabababaccbc

Output

cccccc

Sample 3of 3

Input

1 1
u

Output

999C.cpp

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Ln 11·137 BGNU C++20 (64)