#include <iostream>
#include <vector>
using namespace std;

int n, m;
vector<bool> cups(3);

int main()
{
    cin >> n;
    cups[n - 1] = true;

    cin >> m;
    for (int i = 0; i < m; i++)
    {
        int p, q;
        cin >> p >> q;
        p--;
        q--;

        bool tmp = cups[p];
        cups[p] = cups[q];
        cups[q] = tmp;
    }
    for (int i = 0; i < cups.size(); i++)
    {
        if (cups[i] == true)
        {
            cout << i + 1 << "\n";
        }
    }
}