#include <bits/stdc++.h>
using namespace std;
char s[10010],t[10010];
int n,m,ans=1;
int main(){
    cin>>s>>t;
    n=s[strlen(s)-1]-'0';
    if(strcmp(t,"0")==0){
        cout<<1<<endl;
        return 0;
    }
    int len=strlen(t);
    if(len==1) m=t[0]-'0';
    else m=(t[len-2]-'0')*10+t[len-1]-'0';
    m=m%4+4;
    for(int i=0;i<m;++i)
        ans=ans*n%10;
    cout<<ans<<endl;
    return 0;
}