#include <iostream>
#include <cmath>
using namespace std;
int main()
{
	int n,a;
	cin>>a>>n;
	if((long long)pow(a, n)>2147483647){
	    cout<<"-1";
	}else if((long long)pow(a, n)<=2147483647)
	    cout << (long long)pow(a, n) << endl; 
	return 0;
}

为啥80