cf/mirror

Hard Formula (Hard Version)

CF
2081G23400· legendary gm10s1024 MB⌨ stdin/stdout
#math

Examples

Sample 1of 3
Input
5
Output
2
Sample 2of 3
Input
10000000
Output
2316623097
Sample 3of 3
Input
10000000000
Output
282084447
2081G2.cpp
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Ln 11·137 BGNU C++20 (64)