#include <bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for(int i = a; i < (b); ++i)
#define all(x) begin(x),end(x)
#define sz(x) (int) (x).size();
typedef long long ll;
typedef pair<int,int> pii;
typedef vector<int> vi;

int main() {
	cin.tie(0) -> sync_with_stdio(0);
	cin.exceptions(cin.failbit);

	int x, y;
	cin >> x >> y;

	if (y == 0)
		cout << 3 - x << '\n';
	if (y == 1)
		cout << 4 - x << '\n';
	if (y == 2)
		cout << 5 - x << '\n';
}