cf/mirror

Good String

CF
1165C1300· pupil1s256 MB⌨ stdin/stdout
#greedy

Examples

Sample 1of 3
Input
4
good
Output
0
good
Sample 2of 3
Input
4
aabc
Output
2
ab
Sample 3of 3
Input
3
aaa
Output
3
1165C.cpp
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Ln 11·137 BGNU C++20 (64)