limnk=1n1k2=π26\lim_{n\rightarrow\infty}\sum_{k=1}^n\frac{1}{k^2}=\frac{\pi^2}{6}

很有意思

不是 hhhh

#include<bits/stdc++.h>
using namespace std;
int main(){
int n,m;
cin>>n>>m;
cout<<(int)(pow(1.0*n,1.0/m))<<endl;
return 0;
}