Hard Formula
2081G13100· legendary gm2s1024 MB⌨ stdin/stdout
Examples
Sample 1of 3
Input
5
Output
2
Sample 2of 3
Input
10000000
Output
2316623097
Sample 3of 3
Input
10000000000
Output
282084447
58%
2081G1.cpp
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Ln 11·137 BGNU C++20 (64)