【题解】[CSP-J 2022] 乘方

10 9

1000000000

23333 66666

-1

#include <iostream>
#include <cstdio>
#include <cmath>
using namespace std;
typedef long long ll;
const int MAX=1e9;
ll ans=1;
int main(){
	ll a,b;
	cin>>a>>b;
	if(a==1){
		cout<<1;
		return 0;
	}else{
		for(int i=1;i<=b;i++){
			ans*=a;
			if(ans>MAX){
				cout<<-1;
				return 0;
			}
		}
	}
	cout<<ans;
	return 0;
}