#include <iostream>
#include <string>
#include <vector>
#include <cmath>
#include <algorithm>
#include <cstdlib>
#include <ctime>
#include <cstdio>
#include <functional>
#include <set>
#include <sstream>
#include <map>
#include <queue>
#include <stack>

using namespace std;
 

int mod(string m,int x)
{
	int res=0;
	for(int i=0;i<m.size();i++){
		res=(res*10+m[i]-'0')%x;
	}
	return res;

}

int main()
{
	string n,m;
	cin>>n>>m;

	string loop[10];
	loop[2]="2486";
	loop[3]="3971";
	loop[4]="46";
	loop[7]="7931";
	loop[8]="8426";
	loop[9]="91";

	int x=n[n.size()-1]-'0';
	switch(x){
		case 0: 
		case 1: 
		case 5: 
		case 6:
		cout<<x<<endl; return 0;
	}

//	cout<<x<<" "<<mod(m,x)<<endl;
	cout<<loop[x][mod(m,x)]<<endl;

	return 0;
}