```
#include <iostream>
using namespace std;
int main() {
double sum,k,n;
cin>>k;
for(n=1; sum<=k; ++n) {
sum+=1/n;
}
cout<<n;
return 0;
}
```
by Siyuan @ 2018-04-30 09:35:56
最后需要 `n--` 吧（因为每次都 `n++` 了）
by Siyuan @ 2018-04-30 09:37:49
溢出之后要减去1
by namespace_std @ 2018-04-30 22:31:40
__
by 凯皇6 @ 2018-07-14 08:39:54