70pts,求调

#include <iostream>
#include <cmath>

#define int unsigned long long

using namespace std ;

const int MAXN = 1e9 ;

int a , b ;

signed main( ) {
	
    cin >> a >> b ; 
    
    if(a == 1) cout << 1 << '\n' ;
    else if(b == 1) cout << a << '\n' ;
    else if(a > 31622) cout << -1 << '\n' ;
    else if(b > 29) cout << -1 << '\n' ;
    else if(pow(a , b) <= MAXN ) cout << pow(a , b) << '\n' ;
    else cout << "-1\n" ;
    
    return 0;
}