cf/mirror

Even Substrings

CF
1139A800· newbie0.5s256 MB⌨ stdin/stdout
#implementation#strings

Examples

Sample 1of 2
Input
4
1234
Output
6
Sample 2of 2
Input
4
2244
Output
10
1139A.cpp
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Ln 11·137 BGNU C++20 (64)