#include <bits/stdc++.h>
using namespace std;
int main()
{
    int a,b;
    cin >> a >> b;
    long long c = pow(a,b);
    if(c > 1000000000 || c < 0)
    	cout << "-1";
    else
    	cout << c;
	return 0;
}

此代码都能AC此题