简单到发疯

好像也没什么可讲的
千万不要算出来再判断！！！

#include <bits/stdc++.h>
#define endl "\n"
#define N 500005
#define ll long long
#define debug freopen("in.txt","r",stdin),freopen("out.txt","w",stdout)
using namespace std;
int main()
{
	int a,b;
	cin >> a >> b;
	ll ans = 1;
	for (int i = 1;i <= b;i++)
	{
		ans *= a;
		if(ans > 1000000000)
		{
			cout << "-1";
			return 0;
		}
	}
	cout << ans;
    return 0;
}