#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < n; ++i)
using ll = long long;
using namespace std;
const int INF = 1e9;

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

    bool flag[4] = {false};
    flag[n] = true;

    rep(i, m) {
        int p, q;
        cin >> p >> q;
        swap(flag[p], flag[q]);
    }

    rep(i, 4) if (flag[i]) cout << i << endl;
    cout << endl;

    return 0;
}