2022-08-18 10:53:07 +08:00
|
|
|
|
# N - Harmonic Number
|
|
|
|
|
|
* https://vjudge.net/contest/509210#problem/N
|
2022-08-17 10:22:11 +08:00
|
|
|
|
### <20><><EFBFBD><EFBFBD>
|
2022-08-18 10:53:07 +08:00
|
|
|
|
h(n)=1/1+1/2+<2B><><EFBFBD><EFBFBD>+1/n;n<=1e8
|
|
|
|
|
|
### <20><><EFBFBD><EFBFBD>(2<><32>)
|
|
|
|
|
|
<EFBFBD><EFBFBD>Ӧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
|
|
|
|
|
1.<2E>ֲ<EFBFBD><D6B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ÿ50/100<30><30><EFBFBD><EFBFBD>¼һ<C2BC>Σ<EFBFBD><CEA3><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD>ٽ<EFBFBD><D9BD><EFBFBD><EFBFBD><EFBFBD>
|
|
|
|
|
|
2.<2E><><EFBFBD>ͼ<EFBFBD><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƹ<EFBFBD>ʽ<EFBFBD><CABD>ǰ1e4<65><34><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ĵ<EFBFBD><C4B5>ͼ<EFBFBD><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƹ<EFBFBD>ʽ<EFBFBD><CABD><EFBFBD><EFBFBD>Ϊ<EFBFBD>˹<EFBFBD>ʽֻ<CABD><D6BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>n<EFBFBD>ܴ<EFBFBD><DCB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
2022-08-17 10:22:11 +08:00
|
|
|
|
### <20>ؼ<EFBFBD><D8BC><EFBFBD>
|
2022-08-18 10:53:07 +08:00
|
|
|
|
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ۡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƹ<EFBFBD>ʽ<EFBFBD><EFBFBD><EFBFBD>ֲ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ŷ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
2022-08-17 10:22:11 +08:00
|
|
|
|
### <20>״<EFBFBD><D7B4><EFBFBD>
|
2022-08-18 10:53:07 +08:00
|
|
|
|
* //lf->double <20><><EFBFBD><EFBFBD>llf
|
|
|
|
|
|
* //cmath <20><>log<6F><67><EFBFBD><EFBFBD>ln
|
|
|
|
|
|
* ֱ<><D6B1><EFBFBD><EFBFBD>int/long long<6E><67><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
2022-08-17 10:22:11 +08:00
|
|
|
|
### <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
2022-08-18 10:53:07 +08:00
|
|
|
|
* doubl&%lf https://blog.csdn.net/weixin_46585199/article/details/119044763
|
|
|
|
|
|
* <20><><EFBFBD>ͼ<EFBFBD><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƹ<EFBFBD>ʽ<EFBFBD><CABD>f(n)=ln(n)+r+1.0/(2*n),r<><72>ŷ<EFBFBD><C5B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
|
|
|
|
|
//ע<>⣺<EFBFBD>˹<EFBFBD>ʽֻ<CABD><D6BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>n<EFBFBD>ܴ<EFBFBD><DCB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
|
|
|
|
|
* #define r 0.57721566490153286060651209//ŷ<><C5B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
|
|
|
|
|
|
