再发一个

#include<bits/stdc++.h>
using namespace std;
int a, b;
long long c;
void speed_up(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	return;
}
void init(){
	a = 0;
	b = 0;
	c = 0;
	return;
}
/* 
考场上加 
void open(){
	freopen("pow.in", "r", stdin);
	freopen("pow.out","w",stdout);
	return;
}
void close(){
	fclose(stdin);
	fclose(stdout);
	return;
}
*/
int main(){
	speed_up();
	init();
	/*
	open();
	*/
	cin >> a >> b;
	long long c;
	c = pow(a, b);  //不受影响直接加~~hydroac上AC过~~
	if(c > 1e9 || c < 0){  //1e9代表10^9,超过long long就小于0 
		cout << "-1";
		return 0;  //别忘了~~hydroac上忘加return0wa了~~ 
	}
	cout << c;  //懒得写else
	/*
	close();
	*/ 
	return 0;
}  //共48行 C++11O2代码