#include<iostream>
#include<string>

using namespace std;

int calc(int w,string s){
	int tmp=0;
	for(int i=0;i<s.size();i++){
		tmp*=10;
		tmp+=s[i]-'0';
		tmp%=w;
	}
	return tmp;
}

int main(){

	string N,M;
	int n;

	cin>>N>>M;
	n=N[N.size()-1]-'0';

	int c;

	if(M=="0") cout<<"1"<<endl;
	else if(n==0||n==1||n==5||n==6) cout<<n<<endl;
	else if(n==2){
		c=calc(4,M);
		if(c==1) cout<<2<<endl;
		else if(c==2) cout<<4<<endl;
		else if(c==3) cout<<8<<endl;
		else cout<<6<<endl;
	}
	else if(n==3){
		c=calc(4,M);
		if(c==1) cout<<3<<endl;
		else if(c==2) cout<<9<<endl;
		else if(c==3) cout<<7<<endl;
		else cout<<1<<endl;
	}
	else if(n==4){
		c=calc(2,M);
		if(c==1) cout<<4<<endl;
		else cout<<6<<endl;
	}
	else if(n==7){
		c=calc(4,M);
		if(c==1) cout<<7<<endl;
		else if(c==2) cout<<9<<endl;
		else if(c==3) cout<<3<<endl;
		else cout<<1<<endl;
	}
	else if(n==8){
		c=calc(4,M);
		if(c==1) cout<<8<<endl;
		else if(c==2) cout<<4<<endl;
		else if(c==3) cout<<2<<endl;
		else cout<<6<<endl;
	}
	else {
		c=calc(2,M);
		if(c==1) cout<<9<<endl;
		else cout<<1<<endl;
	}
}