#include <bits/stdc++.h>
using namespace std;
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n) FOR(i,0,n)
#define ALL(v) begin(v),end(v)
template<typename A, typename B> inline bool chmax(A & a, const B & b) { if (a < b) { a = b; return true; } return false; }
template<typename A, typename B> inline bool chmin(A & a, const B & b) { if (a > b) { a = b; return true; } return false; }
using ll = long long;
using pii = pair<int, int>;
constexpr ll INF = 1ll<<30;
constexpr ll longINF = 1ll<<60;
constexpr ll MOD = 1000000007;
constexpr bool debug = false;
//---------------------------------//

int main() {
	int n[6] {2,8,5,7,1,4};
	
	string N, K;
	cin >> N >> K;
	int m6 = 0;
	REP(i, N.size()) m6 = (10 * m6 + N[i] - '0') % 6;
	
	int ans = m6;
	if ((K.back() - '0') % 2 == 0) {
		if (m6 == 2) ans = 4;
		else if (m6 == 4) ans = 2;
		else if (m6 == 5) ans = 1;
	}
	// mod 6
	// 0,1 trivial
	// 2 - 2,4
	// 3 - 3
	// 4 - 4,2
	// 5 - 5,1
	
	cout << n[(ans + 5) % 6] << endl;
}