OJ Board

Hii can anyone help me?

I submitted this ,but the judge kept saying i have wrong answer =( please help
#include <iostream>
#include <math.h>
using namespace std;

int main(){
double n, p;
double ans;
while(cin >> n >> p){
ans= pow(p,1/n);
cout << round(ans) << endl;
}
return 0;
}