#include<bits/stdc++.h> using namespace std; int main() { int a, b; cin >> a >> b; long long result = 1; for (int i = 0; i < b; ++i) { result *= a; if (result > 1e9) { result = -1; break; } } cout << result << endl; return 0; }

#include <bits/stdc++.h> using namespace std; int main(){ int a,b; cin>>a>>b; if(pow(a,b) > pow(10,9)){ cout<<-1; } else cout<<int(pow(a,b)); }

#include <iostream> #include<cmath> using namespace std; int main(){ long long a,b,sum=0; cin>>a>>b; if(pow(a,b)>1000000000){ cout<<"-1"; }else{ sum=pow(a,b); cout<<sum; } }

#include<bits/stdc++.h> using namespace std; int main(){ long long a,b,m,n; n=pow(10,9); cin>>a>>b; m=pow(a,b); if(m>n||m<0){ cout<<-1; }else{ cout<<m; } return 0; }

#include<bits/stdc++.h> using namespace std; int main(){ long long a,b,ans=1; cin>>a>>b; for(int i=1;i<=b;i++){ ans*=a; if(ans>1000000000){ cout<<"-1"; return 0; } } cout<<ans; return 0; }