cf/mirror

Little Artem and Graph

CF
641G2300· international master12s256 MB⌨ stdin/stdout

Examples

Sample 1of 2
Input
3 2
1 2
Output
3
Sample 2of 2
Input
4 3
1 2 3
Output
16
641G.cpp
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Ln 11·137 BGNU C++20 (64)