样例过了

#include<bits/stdc++.h>

using namespace std;
signed main(){
	int a,b;
	cin>>a>>b;
	int sum=a;
	int M=int(0x3f3f3f3f3f3f3f3f3f3f3f3f);
	for(int i=2;i<=b;i++){
		sum*=a;
		if(sum==M||sum>1000000000){
			cout<<-1;
			return 0;
		}
	}
	cout<<sum;
	return 0;
}