#include<bits/stdc++.h>
using namespace std;
int main(){
    int a,b,s=1;
    cin>>a>>b;
    for(int i=1;i<=b;i++){
        s*=a;
        s%=1000;
    }
    if(s<10)
		cout<<"00"<<s;
	else if(s<100)
		cout<<"0"<<s;
	else
		cout<<s;
    return 0;
}